145151939 has 2 divisors, whose sum is σ = 145151940. Its totient is φ = 145151938.

The previous prime is 145151917. The next prime is 145151947. The reversal of 145151939 is 939151541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145151939 - 2¹² = 145147843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145156939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72575969 + 72575970.

It is an arithmetic number, because the mean of its divisors is an integer number (72575970).

Almost surely, 2^145151939 is an apocalyptic number.

145151939 is a deficient number, since it is larger than the sum of its proper divisors (1).

145151939 is an equidigital number, since it uses as much as digits as its factorization.

145151939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 38.

The square root of 145151939 is about 12047.9018505298. The cubic root of 145151939 is about 525.5422231670.

The spelling of 145151939 in words is "one hundred forty-five million, one hundred fifty-one thousand, nine hundred thirty-nine".