1274320355 has 16 divisors (see below), whose sum is σ = 1906516224. Its totient is φ = 794381280.

The previous prime is 1274320321. The next prime is 1274320361. The reversal of 1274320355 is 5530234721.

It is not a de Polignac number, because 1274320355 - 2²⁶ = 1207211491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1654577 + ... + 1655346.

It is an arithmetic number, because the mean of its divisors is an integer number (119157264).

Almost surely, 2^1274320355 is an apocalyptic number.

1274320355 is a deficient number, since it is larger than the sum of its proper divisors (632195869).

1274320355 is a wasteful number, since it uses less digits than its factorization.

1274320355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309946.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 1274320355 is about 35697.6239405370. The cubic root of 1274320355 is about 1084.1587354292.

The spelling of 1274320355 in words is "one billion, two hundred seventy-four million, three hundred twenty thousand, three hundred fifty-five".