145092691 has 8 divisors (see below), whose sum is σ = 146440800. Its totient is φ = 143751168.

The previous prime is 145092659. The next prime is 145092719. The reversal of 145092691 is 196290541.

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 145092691 - 2⁵ = 145092659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145092691.

It is not an unprimeable number, because it can be changed into a prime (145092601) 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 in 7 ways as a sum of consecutive naturals, for example, 49725 + ... + 52561.

It is an arithmetic number, because the mean of its divisors is an integer number (18305100).

Almost surely, 2^145092691 is an apocalyptic number.

145092691 is a deficient number, since it is larger than the sum of its proper divisors (1348109).

145092691 is a wasteful number, since it uses less digits than its factorization.

145092691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 145092691 is about 12045.4427481932. The cubic root of 145092691 is about 525.4707083039.

The spelling of 145092691 in words is "one hundred forty-five million, ninety-two thousand, six hundred ninety-one".