1512970891 has 2 divisors, whose sum is σ = 1512970892. Its totient is φ = 1512970890.

The previous prime is 1512970873. The next prime is 1512970933. The reversal of 1512970891 is 1980792151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1512970891 - 2⁵ = 1512970859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1512970801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756485445 + 756485446.

It is an arithmetic number, because the mean of its divisors is an integer number (756485446).

Almost surely, 2^1512970891 is an apocalyptic number.

1512970891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1512970891 is an equidigital number, since it uses as much as digits as its factorization.

1512970891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 43.

The square root of 1512970891 is about 38896.9264981181. The cubic root of 1512970891 is about 1148.0043247803.

The spelling of 1512970891 in words is "one billion, five hundred twelve million, nine hundred seventy thousand, eight hundred ninety-one".