1387065654 has 64 divisors (see below), whose sum is σ = 3327367680. Its totient is φ = 425774880.

The previous prime is 1387065653. The next prime is 1387065689. The reversal of 1387065654 is 4565607831.

1387065654 is a `hidden beast` number, since 1 + 3 + 87 + 0 + 6 + 565 + 4 = 666.

1387065654 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1387065654² = 3847902257012895432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387065653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325719 + ... + 329949.

It is an arithmetic number, because the mean of its divisors is an integer number (51990120).

Almost surely, 2^1387065654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1387065654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1663683840).

1387065654 is an abundant number, since it is smaller than the sum of its proper divisors (1940302026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1387065654 is a wasteful number, since it uses less digits than its factorization.

1387065654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722 (or 4716 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 1387065654 is about 37243.3303290670. The cubic root of 1387065654 is about 1115.2331562796.

It can be divided in two parts, 13870 and 65654, that added together give a square (79524 = 282²).

The spelling of 1387065654 in words is "one billion, three hundred eighty-seven million, sixty-five thousand, six hundred fifty-four".