161140632 has 16 divisors (see below), whose sum is σ = 402851640. Its totient is φ = 53713536.

The previous prime is 161140621. The next prime is 161140643. The reversal of 161140632 is 236041161.

It is an interprime number because it is at equal distance from previous prime (161140621) and next prime (161140643).

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 6714193 = 161140632 / (1 + 6 + 1 + 1 + 4 + 0 + 6 + 3 + 2).

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, 3357073 + ... + 3357120.

Almost surely, 2^161140632 is an apocalyptic number.

161140632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161140632 is an abundant number, since it is smaller than the sum of its proper divisors (241711008).

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

161140632 is a wasteful number, since it uses less digits than its factorization.

161140632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6714202 (or 6714198 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 161140632 is about 12694.1180079594. The cubic root of 161140632 is about 544.1705329689.

Adding to 161140632 its reverse (236041161), we get a palindrome (397181793).

The spelling of 161140632 in words is "one hundred sixty-one million, one hundred forty thousand, six hundred thirty-two".