161546460 has 48 divisors (see below), whose sum is σ = 456575616. Its totient is φ = 42674752.

The previous prime is 161546431. The next prime is 161546467. The reversal of 161546460 is 64645161.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161546467) 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, 6162 + ... + 19001.

It is an arithmetic number, because the mean of its divisors is an integer number (9511992).

Almost surely, 2^161546460 is an apocalyptic number.

161546460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161546460 is an abundant number, since it is smaller than the sum of its proper divisors (295029156).

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

161546460 is a wasteful number, since it uses less digits than its factorization.

161546460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25282 (or 25280 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 161546460 is about 12710.0928399442. The cubic root of 161546460 is about 544.6269758961.

The spelling of 161546460 in words is "one hundred sixty-one million, five hundred forty-six thousand, four hundred sixty".