1388052870 has 32 divisors (see below), whose sum is σ = 3361897440. Its totient is φ = 366750720.

The previous prime is 1388052851. The next prime is 1388052929. The reversal of 1388052870 is 782508831.

It is a happy number.

It is a congruent number.

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, 208971 + ... + 215510.

It is an arithmetic number, because the mean of its divisors is an integer number (105059295).

Almost surely, 2^1388052870 is an apocalyptic number.

1388052870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1388052870 is an abundant number, since it is smaller than the sum of its proper divisors (1973844570).

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

1388052870 is a wasteful number, since it uses less digits than its factorization.

1388052870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424600.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 1388052870 is about 37256.5815662146. The cubic root of 1388052870 is about 1115.4976751018.

The spelling of 1388052870 in words is "one billion, three hundred eighty-eight million, fifty-two thousand, eight hundred seventy".