1913890951 has 8 divisors (see below), whose sum is σ = 2231943200. Its totient is φ = 1640477664.

The previous prime is 1913890939. The next prime is 1913890967. The reversal of 1913890951 is 1590983191.

It is not a de Polignac number, because 1913890951 - 2²¹ = 1911793799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913891951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2789586 + ... + 2790271.

It is an arithmetic number, because the mean of its divisors is an integer number (278992900).

Almost surely, 2^1913890951 is an apocalyptic number.

1913890951 is a deficient number, since it is larger than the sum of its proper divisors (318052249).

1913890951 is an frugal number, since it uses more digits than its factorization.

1913890951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579878 (or 5579864 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 46.

The square root of 1913890951 is about 43748.0393960689. The cubic root of 1913890951 is about 1241.5733910043.

The spelling of 1913890951 in words is "one billion, nine hundred thirteen million, eight hundred ninety thousand, nine hundred fifty-one".