1297505634 has 16 divisors (see below), whose sum is σ = 2626277472. Its totient is φ = 427290848.

The previous prime is 1297505621. The next prime is 1297505669. The reversal of 1297505634 is 4365057921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1302219 + ... + 1303214.

It is an arithmetic number, because the mean of its divisors is an integer number (164142342).

Almost surely, 2^1297505634 is an apocalyptic number.

1297505634 is an abundant number, since it is smaller than the sum of its proper divisors (1328771838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1297505634 is a wasteful number, since it uses less digits than its factorization.

1297505634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605521.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 1297505634 is about 36020.9055133266. The cubic root of 1297505634 is about 1090.6944019557.

The spelling of 1297505634 in words is "one billion, two hundred ninety-seven million, five hundred five thousand, six hundred thirty-four".