145093691 has 8 divisors (see below), whose sum is σ = 155574720. Its totient is φ = 134828928.

The previous prime is 145093679. The next prime is 145093693. The reversal of 145093691 is 196390541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145093691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145093693) 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, 52676 + ... + 55361.

It is an arithmetic number, because the mean of its divisors is an integer number (19446840).

Almost surely, 2^145093691 is an apocalyptic number.

145093691 is a deficient number, since it is larger than the sum of its proper divisors (10481029).

145093691 is a wasteful number, since it uses less digits than its factorization.

145093691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108133.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 145093691 is about 12045.4842575963. The cubic root of 145093691 is about 525.4719155080.

The spelling of 145093691 in words is "one hundred forty-five million, ninety-three thousand, six hundred ninety-one".