45191478 has 8 divisors (see below), whose sum is σ = 90382968. Its totient is φ = 15063824.

The previous prime is 45191477. The next prime is 45191479. The reversal of 45191478 is 87419154.

It is an interprime number because it is at equal distance from previous prime (45191477) and next prime (45191479).

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

45191478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45191473) 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, 3765951 + ... + 3765962.

It is an arithmetic number, because the mean of its divisors is an integer number (11297871).

Almost surely, 2^45191478 is an apocalyptic number.

45191478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45191478 is a wasteful number, since it uses less digits than its factorization.

45191478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7531918.

The product of its digits is 40320, while the sum is 39.

The square root of 45191478 is about 6722.4607101864. The cubic root of 45191478 is about 356.1931105218.

The spelling of 45191478 in words is "forty-five million, one hundred ninety-one thousand, four hundred seventy-eight".