1499961157 has 2 divisors, whose sum is σ = 1499961158. Its totient is φ = 1499961156.

The previous prime is 1499961091. The next prime is 1499961163. The reversal of 1499961157 is 7511699941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1307473281 + 192487876 = 36159^2 + 13874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1499961157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1499961457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 749980578 + 749980579.

It is an arithmetic number, because the mean of its divisors is an integer number (749980579).

Almost surely, 2^1499961157 is an apocalyptic number.

It is an amenable number.

1499961157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1499961157 is an equidigital number, since it uses as much as digits as its factorization.

1499961157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 52.

The square root of 1499961157 is about 38729.3319978540. The cubic root of 1499961157 is about 1144.7043615491.

The spelling of 1499961157 in words is "one billion, four hundred ninety-nine million, nine hundred sixty-one thousand, one hundred fifty-seven".