1162161550 has 48 divisors (see below), whose sum is σ = 2381593104. Its totient is φ = 418400000.

The previous prime is 1162161541. The next prime is 1162161551. The reversal of 1162161550 is 551612611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162161551) 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, 45090 + ... + 66010.

It is an arithmetic number, because the mean of its divisors is an integer number (49616523).

Almost surely, 2^1162161550 is an apocalyptic number.

1162161550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1162161550 is an abundant number, since it is smaller than the sum of its proper divisors (1219431554).

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

1162161550 is a wasteful number, since it uses less digits than its factorization.

1162161550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21045 (or 21040 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 1162161550 is about 34090.4906095527. The cubic root of 1162161550 is about 1051.3698070627.

The spelling of 1162161550 in words is "one billion, one hundred sixty-two million, one hundred sixty-one thousand, five hundred fifty".