145972813 has 12 divisors (see below), whose sum is σ = 170002272. Its totient is φ = 124974360.

The previous prime is 145972793. The next prime is 145972819. The reversal of 145972813 is 318279541.

It is not a de Polignac number, because 145972813 - 2²¹ = 143875661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145972819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78808 + ... + 80638.

It is an arithmetic number, because the mean of its divisors is an integer number (14166856).

Almost surely, 2^145972813 is an apocalyptic number.

It is an amenable number.

145972813 is a deficient number, since it is larger than the sum of its proper divisors (24029459).

145972813 is a wasteful number, since it uses less digits than its factorization.

145972813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472 (or 3465 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 145972813 is about 12081.9209151525. The cubic root of 145972813 is about 526.5310565679.

The spelling of 145972813 in words is "one hundred forty-five million, nine hundred seventy-two thousand, eight hundred thirteen".