1270810491 has 4 divisors (see below), whose sum is σ = 1694413992. Its totient is φ = 847206992.

The previous prime is 1270810451. The next prime is 1270810501. The reversal of 1270810491 is 1940180721.

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

It is a cyclic number.

It is not a de Polignac number, because 1270810491 - 2¹⁰ = 1270809467 is a prime.

It is a super-2 number, since 2×1270810491² = 3229918608071322162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1270810451) 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, 211801746 + ... + 211801751.

It is an arithmetic number, because the mean of its divisors is an integer number (423603498).

Almost surely, 2^1270810491 is an apocalyptic number.

1270810491 is a deficient number, since it is larger than the sum of its proper divisors (423603501).

1270810491 is an equidigital number, since it uses as much as digits as its factorization.

1270810491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423603500.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 1270810491 is about 35648.4290116689. The cubic root of 1270810491 is about 1083.1624530685.

The spelling of 1270810491 in words is "one billion, two hundred seventy million, eight hundred ten thousand, four hundred ninety-one".