1951654912957 has 2 divisors, whose sum is σ = 1951654912958. Its totient is φ = 1951654912956.

The previous prime is 1951654912939. The next prime is 1951654913003. The reversal of 1951654912957 is 7592194561591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1951234621956 + 420291001 = 1396866^2 + 20501^2 .

It is a cyclic number.

It is not a de Polignac number, because 1951654912957 - 2³⁵ = 1917295174589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1951654912937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975827456478 + 975827456479.

It is an arithmetic number, because the mean of its divisors is an integer number (975827456479).

Almost surely, 2^{1951654912957} is an apocalyptic number.

It is an amenable number.

1951654912957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1951654912957 is an equidigital number, since it uses as much as digits as its factorization.

1951654912957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618000, while the sum is 64.

The spelling of 1951654912957 in words is "one trillion, nine hundred fifty-one billion, six hundred fifty-four million, nine hundred twelve thousand, nine hundred fifty-seven".