40918619 has 8 divisors (see below), whose sum is σ = 47202048. Its totient is φ = 34744680.

The previous prime is 40918607. The next prime is 40918621. The reversal of 40918619 is 91681904.

It is a happy number.

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 40918619 - 2²⁰ = 39870043 is a prime.

It is a super-2 number, since 2×40918619² = 3348666761734322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40918639) 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, 26567 + ... + 28064.

It is an arithmetic number, because the mean of its divisors is an integer number (5900256).

Almost surely, 2^40918619 is an apocalyptic number.

40918619 is a deficient number, since it is larger than the sum of its proper divisors (6283429).

40918619 is a wasteful number, since it uses less digits than its factorization.

40918619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54745.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 40918619 is about 6396.7662924325. The cubic root of 40918619 is about 344.5934270955.

The spelling of 40918619 in words is "forty million, nine hundred eighteen thousand, six hundred nineteen".