1302997690 has 8 divisors (see below), whose sum is σ = 2345395860. Its totient is φ = 521199072.

The previous prime is 1302997651. The next prime is 1302997693. The reversal of 1302997690 is 967992031.

It can be written as a sum of positive squares in 2 ways, for example, as 1300972761 + 2024929 = 36069^2 + 1423^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1302997690² = 3395605960290672200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1302997690.

It is not an unprimeable number, because it can be changed into a prime (1302997693) 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, 65149875 + ... + 65149894.

Almost surely, 2^1302997690 is an apocalyptic number.

1302997690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1302997690 is a deficient number, since it is larger than the sum of its proper divisors (1042398170).

1302997690 is a wasteful number, since it uses less digits than its factorization.

1302997690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130299776.

The product of its (nonzero) digits is 183708, while the sum is 46.

The square root of 1302997690 is about 36097.0592985080. The cubic root of 1302997690 is about 1092.2311256320.

The spelling of 1302997690 in words is "one billion, three hundred two million, nine hundred ninety-seven thousand, six hundred ninety".