45191613 has 4 divisors (see below), whose sum is σ = 60255488. Its totient is φ = 30127740.

The previous prime is 45191611. The next prime is 45191623. The reversal of 45191613 is 31619154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 45191613 - 2¹ = 45191611 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 (45191611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7531933 + ... + 7531938.

It is an arithmetic number, because the mean of its divisors is an integer number (15063872).

Almost surely, 2^45191613 is an apocalyptic number.

It is an amenable number.

45191613 is a deficient number, since it is larger than the sum of its proper divisors (15063875).

45191613 is a wasteful number, since it uses less digits than its factorization.

45191613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15063874.

The product of its digits is 3240, while the sum is 30.

The square root of 45191613 is about 6722.4707511450. The cubic root of 45191613 is about 356.1934652054.

The spelling of 45191613 in words is "forty-five million, one hundred ninety-one thousand, six hundred thirteen".