1381657602 has 32 divisors (see below), whose sum is σ = 2989260288. Its totient is φ = 423213696.

The previous prime is 1381657567. The next prime is 1381657687. The reversal of 1381657602 is 2067561831.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22323 + ... + 57110.

It is an arithmetic number, because the mean of its divisors is an integer number (93414384).

Almost surely, 2^1381657602 is an apocalyptic number.

1381657602 is an abundant number, since it is smaller than the sum of its proper divisors (1607602686).

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

1381657602 is a wasteful number, since it uses less digits than its factorization.

1381657602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79674.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1381657602 is about 37170.6551193277. The cubic root of 1381657602 is about 1113.7818684867.

The spelling of 1381657602 in words is "one billion, three hundred eighty-one million, six hundred fifty-seven thousand, six hundred two".