1385611974 has 64 divisors (see below), whose sum is σ = 3320352000. Its totient is φ = 426876480.

The previous prime is 1385611973. The next prime is 1385612003. The reversal of 1385611974 is 4791165831.

1385611974 is a `hidden beast` number, since 1 + 3 + 8 + 561 + 19 + 74 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385611973) 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, 25597 + ... + 58535.

It is an arithmetic number, because the mean of its divisors is an integer number (51880500).

Almost surely, 2^1385611974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1385611974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1660176000).

1385611974 is an abundant number, since it is smaller than the sum of its proper divisors (1934740026).

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

1385611974 is a wasteful number, since it uses less digits than its factorization.

1385611974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33010 (or 33004 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 1385611974 is about 37223.8092354880. The cubic root of 1385611974 is about 1114.8434225492.

The spelling of 1385611974 in words is "one billion, three hundred eighty-five million, six hundred eleven thousand, nine hundred seventy-four".