145191976 has 16 divisors (see below), whose sum is σ = 272665440. Its totient is φ = 72481200.

The previous prime is 145191973. The next prime is 145191989. The reversal of 145191976 is 679191541.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (145191973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8850 + ... + 19201.

It is an arithmetic number, because the mean of its divisors is an integer number (17041590).

Almost surely, 2^145191976 is an apocalyptic number.

It is an amenable number.

145191976 is a deficient number, since it is larger than the sum of its proper divisors (127473464).

145191976 is a wasteful number, since it uses less digits than its factorization.

145191976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28704 (or 28700 counting only the distinct ones).

The product of its digits is 68040, while the sum is 43.

The square root of 145191976 is about 12049.5633115893. The cubic root of 145191976 is about 525.5905385158.

The spelling of 145191976 in words is "one hundred forty-five million, one hundred ninety-one thousand, nine hundred seventy-six".