1297003530 has 32 divisors (see below), whose sum is σ = 3114175104. Its totient is φ = 345715776.

The previous prime is 1297003507. The next prime is 1297003537. The reversal of 1297003530 is 353007921.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1297003537) 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, 71244 + ... + 87576.

It is an arithmetic number, because the mean of its divisors is an integer number (97317972).

Almost surely, 2^1297003530 is an apocalyptic number.

1297003530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1297003530 is an abundant number, since it is smaller than the sum of its proper divisors (1817171574).

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

1297003530 is a wasteful number, since it uses less digits than its factorization.

1297003530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18990.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 1297003530 is about 36013.9352195785. The cubic root of 1297003530 is about 1090.5536928226.

The spelling of 1297003530 in words is "one billion, two hundred ninety-seven million, three thousand, five hundred thirty".