1299161146 has 16 divisors (see below), whose sum is σ = 1962037224. Its totient is φ = 645156864.

The previous prime is 1299161117. The next prime is 1299161153. The reversal of 1299161146 is 6411619921.

It can be written as a sum of positive squares in 4 ways, for example, as 971007921 + 328153225 = 31161^2 + 18115^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1299161099 and 1299161108.

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, 613786 + ... + 615898.

Almost surely, 2^1299161146 is an apocalyptic number.

1299161146 is a deficient number, since it is larger than the sum of its proper divisors (662876078).

1299161146 is a wasteful number, since it uses less digits than its factorization.

1299161146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065.

The product of its digits is 23328, while the sum is 40.

The square root of 1299161146 is about 36043.8780654912. The cubic root of 1299161146 is about 1091.1580840160.

The spelling of 1299161146 in words is "one billion, two hundred ninety-nine million, one hundred sixty-one thousand, one hundred forty-six".