291949874501 has 2 divisors, whose sum is σ = 291949874502. Its totient is φ = 291949874500.

The previous prime is 291949874483. The next prime is 291949874507. The reversal of 291949874501 is 105478949192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291913284100 + 36590401 = 540290^2 + 6049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-291949874501 is a prime.

It is a super-2 number, since 2×291949874501² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (291949874507) 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, 145974937250 + 145974937251.

It is an arithmetic number, because the mean of its divisors is an integer number (145974937251).

Almost surely, 2^291949874501 is an apocalyptic number.

It is an amenable number.

291949874501 is a deficient number, since it is larger than the sum of its proper divisors (1).

291949874501 is an equidigital number, since it uses as much as digits as its factorization.

291949874501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 59.

The spelling of 291949874501 in words is "two hundred ninety-one billion, nine hundred forty-nine million, eight hundred seventy-four thousand, five hundred one".