1201613291 has 2 divisors, whose sum is σ = 1201613292. Its totient is φ = 1201613290.

The previous prime is 1201613249. The next prime is 1201613299. The reversal of 1201613291 is 1923161021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201613291 is a prime.

It is a super-2 number, since 2×1201613291² = 2887749002215701362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1201613291.

It is not a weakly prime, because it can be changed into another prime (1201613299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600806645 + 600806646.

It is an arithmetic number, because the mean of its divisors is an integer number (600806646).

Almost surely, 2^1201613291 is an apocalyptic number.

1201613291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201613291 is an equidigital number, since it uses as much as digits as its factorization.

1201613291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1201613291 is about 34664.2941800349. The cubic root of 1201613291 is about 1063.1345719060.

The spelling of 1201613291 in words is "one billion, two hundred one million, six hundred thirteen thousand, two hundred ninety-one".