1797949258 has 24 divisors (see below), whose sum is σ = 3188678724. Its totient is φ = 757915200.

The previous prime is 1797949249. The next prime is 1797949273. The reversal of 1797949258 is 8529497971.

It can be written as a sum of positive squares in 2 ways, for example, as 1531704769 + 266244489 = 39137^2 + 16317^2 .

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a junction number, because it is equal to n+sod(n) for n = 1797949196 and 1797949205.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144403 + ... + 156358.

Almost surely, 2^1797949258 is an apocalyptic number.

1797949258 is a deficient number, since it is larger than the sum of its proper divisors (1390729466).

1797949258 is a wasteful number, since it uses less digits than its factorization.

1797949258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300838 (or 300831 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 61.

The square root of 1797949258 is about 42402.2317573026. The cubic root of 1797949258 is about 1215.9782595988.

The spelling of 1797949258 in words is "one billion, seven hundred ninety-seven million, nine hundred forty-nine thousand, two hundred fifty-eight".