2987723957 has 2 divisors, whose sum is σ = 2987723958. Its totient is φ = 2987723956.

The previous prime is 2987723953. The next prime is 2987723969. The reversal of 2987723957 is 7593277892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1596881521 + 1390842436 = 39961^2 + 37294^2 .

It is a cyclic number.

It is not a de Polignac number, because 2987723957 - 2² = 2987723953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2987723896 and 2987723905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2987723953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1493861978 + 1493861979.

It is an arithmetic number, because the mean of its divisors is an integer number (1493861979).

Almost surely, 2^2987723957 is an apocalyptic number.

It is an amenable number.

2987723957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2987723957 is an equidigital number, since it uses as much as digits as its factorization.

2987723957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13335840, while the sum is 59.

The square root of 2987723957 is about 54660.0764452448. The cubic root of 2987723957 is about 1440.2796455676.

The spelling of 2987723957 in words is "two billion, nine hundred eighty-seven million, seven hundred twenty-three thousand, nine hundred fifty-seven".