1970402881 has 4 divisors (see below), whose sum is σ = 2003799600. Its totient is φ = 1937006164.

The previous prime is 1970402851. The next prime is 1970402891. The reversal of 1970402881 is 1882040791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1970402881 - 2²⁵ = 1936848449 is a prime.

It is a super-2 number, since 2×1970402881² = 7764975026906200322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1970402821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16698271 + ... + 16698388.

It is an arithmetic number, because the mean of its divisors is an integer number (500949900).

Almost surely, 2^1970402881 is an apocalyptic number.

It is an amenable number.

1970402881 is a deficient number, since it is larger than the sum of its proper divisors (33396719).

1970402881 is an equidigital number, since it uses as much as digits as its factorization.

1970402881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33396718.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 1970402881 is about 44389.2203243085. The cubic root of 1970402881 is about 1253.6751320805.

The spelling of 1970402881 in words is "one billion, nine hundred seventy million, four hundred two thousand, eight hundred eighty-one".