1892747972 has 12 divisors (see below), whose sum is σ = 3507150780. Its totient is φ = 890704896.

The previous prime is 1892747971. The next prime is 1892747977. The reversal of 1892747972 is 2797472981.

It can be written as a sum of positive squares in 2 ways, for example, as 1362643396 + 530104576 = 36914^2 + 23024^2 .

It is a super-2 number, since 2×1892747972² = 7164989771020225568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1892747971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13917197 + ... + 13917332.

It is an arithmetic number, because the mean of its divisors is an integer number (292262565).

Almost surely, 2^1892747972 is an apocalyptic number.

It is an amenable number.

1892747972 is a deficient number, since it is larger than the sum of its proper divisors (1614402808).

1892747972 is a wasteful number, since it uses less digits than its factorization.

1892747972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27834550 (or 27834548 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 56.

The square root of 1892747972 is about 43505.7234395660. The cubic root of 1892747972 is about 1236.9845154599.

The spelling of 1892747972 in words is "one billion, eight hundred ninety-two million, seven hundred forty-seven thousand, nine hundred seventy-two".