45398019 has 4 divisors (see below), whose sum is σ = 60530696. Its totient is φ = 30265344.

The previous prime is 45397987. The next prime is 45398027. The reversal of 45398019 is 91089354.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 45398019 - 2⁵ = 45397987 is a prime.

It is a super-2 number, since 2×45398019² = 4121960258248722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45396019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7566334 + ... + 7566339.

It is an arithmetic number, because the mean of its divisors is an integer number (15132674).

Almost surely, 2^45398019 is an apocalyptic number.

45398019 is a deficient number, since it is larger than the sum of its proper divisors (15132677).

45398019 is a wasteful number, since it uses less digits than its factorization.

45398019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15132676.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 45398019 is about 6737.8052064452. The cubic root of 45398019 is about 356.7349286568.

The spelling of 45398019 in words is "forty-five million, three hundred ninety-eight thousand, nineteen".