1249648951 has 2 divisors, whose sum is σ = 1249648952. Its totient is φ = 1249648950.

The previous prime is 1249648891. The next prime is 1249648997. The reversal of 1249648951 is 1598469421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1249648951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1249648895 and 1249648904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1249648051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624824475 + 624824476.

It is an arithmetic number, because the mean of its divisors is an integer number (624824476).

Almost surely, 2^1249648951 is an apocalyptic number.

1249648951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249648951 is an equidigital number, since it uses as much as digits as its factorization.

1249648951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 49.

The square root of 1249648951 is about 35350.3741281475. The cubic root of 1249648951 is about 1077.1164939552.

The spelling of 1249648951 in words is "one billion, two hundred forty-nine million, six hundred forty-eight thousand, nine hundred fifty-one".