997149130 has 48 divisors (see below), whose sum is σ = 1886681160. Its totient is φ = 379410944.

The previous prime is 997149073. The next prime is 997149163. The reversal of 997149130 is 31941799.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 841174009 + 155975121 = 29003^2 + 12489^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1232166 + ... + 1232974.

Almost surely, 2^997149130 is an apocalyptic number.

997149130 is a deficient number, since it is larger than the sum of its proper divisors (889532030).

997149130 is a wasteful number, since it uses less digits than its factorization.

997149130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 997149130 is about 31577.6682166369. The cubic root of 997149130 is about 999.0488055159.

The spelling of 997149130 in words is "nine hundred ninety-seven million, one hundred forty-nine thousand, one hundred thirty".