45909019 has 6 divisors (see below), whose sum is σ = 49712316. Its totient is φ = 42377400.

The previous prime is 45908999. The next prime is 45909029. The reversal of 45909019 is 91090954.

It is not a de Polignac number, because 45909019 - 2⁵ = 45908987 is a prime.

It is a super-2 number, since 2×45909019² = 4215276051084722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45909029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135657 + ... + 135994.

It is an arithmetic number, because the mean of its divisors is an integer number (8285386).

Almost surely, 2^45909019 is an apocalyptic number.

45909019 is a deficient number, since it is larger than the sum of its proper divisors (3803297).

45909019 is a wasteful number, since it uses less digits than its factorization.

45909019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271677 (or 271664 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 45909019 is about 6775.6194550757. The cubic root of 45909019 is about 358.0684070770.

The spelling of 45909019 in words is "forty-five million, nine hundred nine thousand, nineteen".