161912954 has 24 divisors (see below), whose sum is σ = 285041268. Its totient is φ = 68772480.

The previous prime is 161912951. The next prime is 161912957. The reversal of 161912954 is 459219161.

161912954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161912951) and next prime (161912957).

It can be written as a sum of positive squares in 2 ways, for example, as 92640625 + 69272329 = 9625^2 + 8323^2 .

It is a super-2 number, since 2×161912954² = 52431609346012232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161912951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3764 + ... + 18384.

Almost surely, 2^161912954 is an apocalyptic number.

161912954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161912954 is a deficient number, since it is larger than the sum of its proper divisors (123128314).

161912954 is a wasteful number, since it uses less digits than its factorization.

161912954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14750 (or 14743 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The square root of 161912954 is about 12724.5021120671. The cubic root of 161912954 is about 545.0385226537.

It can be divided in two parts, 1619 and 12954, that multiplied together give a triangular number (20972526 = T₆₄₇₆).

The spelling of 161912954 in words is "one hundred sixty-one million, nine hundred twelve thousand, nine hundred fifty-four".