811492148 has 12 divisors (see below), whose sum is σ = 1421290500. Its totient is φ = 405409152.

The previous prime is 811492139. The next prime is 811492151. The reversal of 811492148 is 841294118.

It can be written as a sum of positive squares in 2 ways, for example, as 408767524 + 402724624 = 20218^2 + 20068^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78773 + ... + 88476.

It is an arithmetic number, because the mean of its divisors is an integer number (118440875).

Almost surely, 2^811492148 is an apocalyptic number.

It is an amenable number.

811492148 is a deficient number, since it is larger than the sum of its proper divisors (609798352).

811492148 is a wasteful number, since it uses less digits than its factorization.

811492148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168466 (or 168464 counting only the distinct ones).

The product of its digits is 18432, while the sum is 38.

The square root of 811492148 is about 28486.7012481263. The cubic root of 811492148 is about 932.7418019904.

The spelling of 811492148 in words is "eight hundred eleven million, four hundred ninety-two thousand, one hundred forty-eight".