161833892890 has 32 divisors (see below), whose sum is σ = 307340953920. Its totient is φ = 61184865024.

The previous prime is 161833892861. The next prime is 161833892897. The reversal of 161833892890 is 98298338161.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (161833892897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 901284 + ... + 1065823.

It is an arithmetic number, because the mean of its divisors is an integer number (9604404810).

Almost surely, 2^161833892890 is an apocalyptic number.

161833892890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161833892890 is a deficient number, since it is larger than the sum of its proper divisors (145507061030).

161833892890 is a wasteful number, since it uses less digits than its factorization.

161833892890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967566.

The product of its (nonzero) digits is 4478976, while the sum is 58.

The spelling of 161833892890 in words is "one hundred sixty-one billion, eight hundred thirty-three million, eight hundred ninety-two thousand, eight hundred ninety".