145764813 has 8 divisors (see below), whose sum is σ = 198488448. Its totient is φ = 95108864.

The previous prime is 145764803. The next prime is 145764833. The reversal of 145764813 is 318467541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145764813 - 2¹³ = 145756621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145764803) 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, 516756 + ... + 517037.

It is an arithmetic number, because the mean of its divisors is an integer number (24811056).

Almost surely, 2^145764813 is an apocalyptic number.

It is an amenable number.

145764813 is a deficient number, since it is larger than the sum of its proper divisors (52723635).

145764813 is a wasteful number, since it uses less digits than its factorization.

145764813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033843.

The product of its digits is 80640, while the sum is 39.

The square root of 145764813 is about 12073.3099438389. The cubic root of 145764813 is about 526.2808489729.

The spelling of 145764813 in words is "one hundred forty-five million, seven hundred sixty-four thousand, eight hundred thirteen".