1259471957 has 4 divisors (see below), whose sum is σ = 1275414720. Its totient is φ = 1243529196.

The previous prime is 1259471951. The next prime is 1259471977. The reversal of 1259471957 is 7591749521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7591749521 = 53 ⋅143240557.

It is a cyclic number.

It is not a de Polignac number, because 1259471957 - 2⁶ = 1259471893 is a prime.

It is a super-2 number, since 2×1259471957² = 3172539220938819698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1259471951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7971263 + ... + 7971420.

It is an arithmetic number, because the mean of its divisors is an integer number (318853680).

Almost surely, 2^1259471957 is an apocalyptic number.

It is an amenable number.

1259471957 is a deficient number, since it is larger than the sum of its proper divisors (15942763).

1259471957 is an equidigital number, since it uses as much as digits as its factorization.

1259471957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15942762.

The product of its digits is 793800, while the sum is 50.

The square root of 1259471957 is about 35489.0399560202. The cubic root of 1259471957 is about 1079.9313962481.

The spelling of 1259471957 in words is "one billion, two hundred fifty-nine million, four hundred seventy-one thousand, nine hundred fifty-seven".