1388029902 has 16 divisors (see below), whose sum is σ = 3172639872. Its totient is φ = 396579960.

The previous prime is 1388029891. The next prime is 1388029919. The reversal of 1388029902 is 2099208831.

It is a super-2 number, since 2×1388029902² = 3853254017692259208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 33048331 = 1388029902 / (1 + 3 + 8 + 8 + 0 + 2 + 9 + 9 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16524124 + ... + 16524207.

It is an arithmetic number, because the mean of its divisors is an integer number (198289992).

Almost surely, 2^1388029902 is an apocalyptic number.

1388029902 is an abundant number, since it is smaller than the sum of its proper divisors (1784609970).

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

1388029902 is a wasteful number, since it uses less digits than its factorization.

1388029902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33048343.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1388029902 is about 37256.2733240994. The cubic root of 1388029902 is about 1115.4915223842.

The spelling of 1388029902 in words is "one billion, three hundred eighty-eight million, twenty-nine thousand, nine hundred two".