161977354 has 32 divisors (see below), whose sum is σ = 313372800. Its totient is φ = 60930240.

The previous prime is 161977351. The next prime is 161977393. The reversal of 161977354 is 453779161.

161977354 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161977354.

It is not an unprimeable number, because it can be changed into a prime (161977351) 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, 13669 + ... + 22600.

It is an arithmetic number, because the mean of its divisors is an integer number (9792900).

Almost surely, 2^161977354 is an apocalyptic number.

161977354 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161977354 is a deficient number, since it is larger than the sum of its proper divisors (151395446).

161977354 is a wasteful number, since it uses less digits than its factorization.

161977354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36318.

The product of its digits is 158760, while the sum is 43.

The square root of 161977354 is about 12727.0324113675. The cubic root of 161977354 is about 545.1107751147.

The spelling of 161977354 in words is "one hundred sixty-one million, nine hundred seventy-seven thousand, three hundred fifty-four".