2951665957 has 2 divisors, whose sum is σ = 2951665958. Its totient is φ = 2951665956.

The previous prime is 2951665909. The next prime is 2951665991. The reversal of 2951665957 is 7595661592.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2950771041 + 894916 = 54321^2 + 946^2 .

It is a cyclic number.

It is not a de Polignac number, because 2951665957 - 2¹⁵ = 2951633189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2951665898 and 2951665907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2951665357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1475832978 + 1475832979.

It is an arithmetic number, because the mean of its divisors is an integer number (1475832979).

Almost surely, 2^2951665957 is an apocalyptic number.

It is an amenable number.

2951665957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2951665957 is an equidigital number, since it uses as much as digits as its factorization.

2951665957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5103000, while the sum is 55.

The square root of 2951665957 is about 54329.2366686667. The cubic root of 2951665957 is about 1434.4620688881.

The spelling of 2951665957 in words is "two billion, nine hundred fifty-one million, six hundred sixty-five thousand, nine hundred fifty-seven".