491095157 has 16 divisors (see below), whose sum is σ = 567570432. Its totient is φ = 416223360.

The previous prime is 491095153. The next prime is 491095169. The reversal of 491095157 is 751590194.

It is not a de Polignac number, because 491095157 - 2² = 491095153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491095153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330857 + ... + 332337.

It is an arithmetic number, because the mean of its divisors is an integer number (35473152).

Almost surely, 2^491095157 is an apocalyptic number.

It is an amenable number.

491095157 is a deficient number, since it is larger than the sum of its proper divisors (76475275).

491095157 is a wasteful number, since it uses less digits than its factorization.

491095157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 491095157 is about 22160.6668897847. Note that the first 3 decimals coincide. The cubic root of 491095157 is about 788.9604213042.

The spelling of 491095157 in words is "four hundred ninety-one million, ninety-five thousand, one hundred fifty-seven".