1297493000 has 64 divisors (see below), whose sum is σ = 3093545520. Its totient is φ = 509184000.

The previous prime is 1297492993. The next prime is 1297493017. The reversal of 1297493000 is 3947921.

It can be written as a sum of positive squares in 8 ways, for example, as 3076516 + 1294416484 = 1754^2 + 35978^2 .

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, 40760 + ... + 65240.

Almost surely, 2^1297493000 is an apocalyptic number.

1297493000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1297493000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1546772760).

1297493000 is an abundant number, since it is smaller than the sum of its proper divisors (1796052520).

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

1297493000 is a wasteful number, since it uses less digits than its factorization.

1297493000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24555 (or 24541 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1297493000 is about 36020.7301425165. The cubic root of 1297493000 is about 1090.6908618611.

The spelling of 1297493000 in words is "one billion, two hundred ninety-seven million, four hundred ninety-three thousand".