1165048990 has 48 divisors (see below), whose sum is σ = 2443316400. Its totient is φ = 398815872.

The previous prime is 1165048961. The next prime is 1165048991. The reversal of 1165048990 is 998405611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165048991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 394941 + ... + 397879.

It is an arithmetic number, because the mean of its divisors is an integer number (50902425).

Almost surely, 2^1165048990 is an apocalyptic number.

1165048990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1165048990 is an abundant number, since it is smaller than the sum of its proper divisors (1278267410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165048990 is a wasteful number, since it uses less digits than its factorization.

1165048990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769 (or 3762 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 1165048990 is about 34132.8139771687. The cubic root of 1165048990 is about 1052.2398113336.

The spelling of 1165048990 in words is "one billion, one hundred sixty-five million, forty-eight thousand, nine hundred ninety".