161545802 has 16 divisors (see below), whose sum is σ = 269337312. Its totient is φ = 72043920.

The previous prime is 161545801. The next prime is 161545823. The reversal of 161545802 is 208545161.

161545802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161545802² = 52194092287646408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161545801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68108 + ... + 70439.

It is an arithmetic number, because the mean of its divisors is an integer number (16833582).

Almost surely, 2^161545802 is an apocalyptic number.

161545802 is a deficient number, since it is larger than the sum of its proper divisors (107791510).

161545802 is a wasteful number, since it uses less digits than its factorization.

161545802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138613.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 161545802 is about 12710.0669549771. The cubic root of 161545802 is about 544.6262364493.

The spelling of 161545802 in words is "one hundred sixty-one million, five hundred forty-five thousand, eight hundred two".