145371979 has 2 divisors, whose sum is σ = 145371980. Its totient is φ = 145371978.

The previous prime is 145371973. The next prime is 145372033. The reversal of 145371979 is 979173541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145371979 - 2³ = 145371971 is a prime.

It is a super-2 number, since 2×145371979² = 42266024556752882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145371971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72685989 + 72685990.

It is an arithmetic number, because the mean of its divisors is an integer number (72685990).

Almost surely, 2^145371979 is an apocalyptic number.

145371979 is a deficient number, since it is larger than the sum of its proper divisors (1).

145371979 is an equidigital number, since it uses as much as digits as its factorization.

145371979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 46.

The square root of 145371979 is about 12057.0302728325. The cubic root of 145371979 is about 525.8076506140.

The spelling of 145371979 in words is "one hundred forty-five million, three hundred seventy-one thousand, nine hundred seventy-nine".