1259622961 has 4 divisors (see below), whose sum is σ = 1263191652. Its totient is φ = 1256054272.

The previous prime is 1259622943. The next prime is 1259622979. The reversal of 1259622961 is 1692269521.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1259622943) and next prime (1259622979).

It can be written as a sum of positive squares in 2 ways, for example, as 1029190561 + 230432400 = 32081^2 + 15180^2 .

It is a cyclic number.

It is not a de Polignac number, because 1259622961 - 2²¹ = 1257525809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1259622901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1783816 + ... + 1784521.

It is an arithmetic number, because the mean of its divisors is an integer number (315797913).

Almost surely, 2^1259622961 is an apocalyptic number.

It is an amenable number.

1259622961 is a deficient number, since it is larger than the sum of its proper divisors (3568691).

1259622961 is an equidigital number, since it uses as much as digits as its factorization.

1259622961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3568690.

The product of its digits is 116640, while the sum is 43.

The square root of 1259622961 is about 35491.1673659799. The cubic root of 1259622961 is about 1079.9745538701.

The spelling of 1259622961 in words is "one billion, two hundred fifty-nine million, six hundred twenty-two thousand, nine hundred sixty-one".