1972043913 has 16 divisors (see below), whose sum is σ = 3013087616. Its totient is φ = 1123856640.

The previous prime is 1972043903. The next prime is 1972043921. The reversal of 1972043913 is 3193402791.

It is not a de Polignac number, because 1972043913 - 2⁵ = 1972043881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1972043903) 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, 118048 + ... + 133713.

It is an arithmetic number, because the mean of its divisors is an integer number (188317976).

Almost surely, 2^1972043913 is an apocalyptic number.

It is an amenable number.

1972043913 is a deficient number, since it is larger than the sum of its proper divisors (1041043703).

1972043913 is a wasteful number, since it uses less digits than its factorization.

1972043913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252144.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 1972043913 is about 44407.7010551098. The cubic root of 1972043913 is about 1254.0230727906.

The spelling of 1972043913 in words is "one billion, nine hundred seventy-two million, forty-three thousand, nine hundred thirteen".