45198919 has 8 divisors (see below), whose sum is σ = 45711360. Its totient is φ = 44689176.

The previous prime is 45198911. The next prime is 45198931. The reversal of 45198919 is 91989154.

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 45198919 - 2³ = 45198911 is a prime.

It is a super-2 number, since 2×45198919² = 4085884557537122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45198911) 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, 60462 + ... + 61204.

It is an arithmetic number, because the mean of its divisors is an integer number (5713920).

Almost surely, 2^45198919 is an apocalyptic number.

45198919 is a deficient number, since it is larger than the sum of its proper divisors (512441).

45198919 is a wasteful number, since it uses less digits than its factorization.

45198919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349.

The product of its digits is 116640, while the sum is 46.

The square root of 45198919 is about 6723.0141305816. The cubic root of 45198919 is about 356.2126591005.

The spelling of 45198919 in words is "forty-five million, one hundred ninety-eight thousand, nine hundred nineteen".