1572145692 has 48 divisors (see below), whose sum is σ = 3979409952. Its totient is φ = 480199680.

The previous prime is 1572145691. The next prime is 1572145721. The reversal of 1572145692 is 2965412751.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1572145691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15409 + ... + 58152.

It is an arithmetic number, because the mean of its divisors is an integer number (82904374).

Almost surely, 2^1572145692 is an apocalyptic number.

1572145692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1572145692 is an abundant number, since it is smaller than the sum of its proper divisors (2407264260).

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

1572145692 is a wasteful number, since it uses less digits than its factorization.

1572145692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73718 (or 73716 counting only the distinct ones).

The product of its digits is 151200, while the sum is 42.

The square root of 1572145692 is about 39650.2924579378. The cubic root of 1572145692 is about 1162.7801162877.

The spelling of 1572145692 in words is "one billion, five hundred seventy-two million, one hundred forty-five thousand, six hundred ninety-two".