1385687632 has 40 divisors (see below), whose sum is σ = 3229803200. Its totient is φ = 562609152.

The previous prime is 1385687623. The next prime is 1385687659. The reversal of 1385687632 is 2367865831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323457 + ... + 327712.

It is an arithmetic number, because the mean of its divisors is an integer number (80745080).

Almost surely, 2^1385687632 is an apocalyptic number.

It is an amenable number.

1385687632 is an abundant number, since it is smaller than the sum of its proper divisors (1844115568).

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

1385687632 is a wasteful number, since it uses less digits than its factorization.

1385687632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651203 (or 651197 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 1385687632 is about 37224.8254797789. The cubic root of 1385687632 is about 1114.8637132920.

The spelling of 1385687632 in words is "one billion, three hundred eighty-five million, six hundred eighty-seven thousand, six hundred thirty-two".