161940514 has 16 divisors (see below), whose sum is σ = 246197952. Its totient is φ = 79880688.

The previous prime is 161940511. The next prime is 161940523. The reversal of 161940514 is 415049161.

It is not an unprimeable number, because it can be changed into a prime (161940511) 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, 59017 + ... + 61699.

It is an arithmetic number, because the mean of its divisors is an integer number (15387372).

Almost surely, 2^161940514 is an apocalyptic number.

161940514 is a deficient number, since it is larger than the sum of its proper divisors (84257438).

161940514 is a wasteful number, since it uses less digits than its factorization.

161940514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 161940514 is about 12725.5850160219. The cubic root of 161940514 is about 545.0694454615.

Adding to 161940514 its reverse (415049161), we get a palindrome (576989675).

The spelling of 161940514 in words is "one hundred sixty-one million, nine hundred forty thousand, five hundred fourteen".