1970801892 has 36 divisors (see below), whose sum is σ = 5116394556. Its totient is φ = 639178560.

The previous prime is 1970801879. The next prime is 1970801893. The reversal of 1970801892 is 2981080791.

It can be written as a sum of positive squares in 2 ways, for example, as 1796403456 + 174398436 = 42384^2 + 13206^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1970801893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 738459 + ... + 741122.

It is an arithmetic number, because the mean of its divisors is an integer number (142122071).

Almost surely, 2^1970801892 is an apocalyptic number.

1970801892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1970801892 is an abundant number, since it is smaller than the sum of its proper divisors (3145592664).

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

1970801892 is a wasteful number, since it uses less digits than its factorization.

1970801892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479628 (or 1479623 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 1970801892 is about 44393.7145551034. The cubic root of 1970801892 is about 1253.7597503770.

The spelling of 1970801892 in words is "one billion, nine hundred seventy million, eight hundred one thousand, eight hundred ninety-two".