40153018 has 4 divisors (see below), whose sum is σ = 60229530. Its totient is φ = 20076508.

The previous prime is 40152991. The next prime is 40153019. The reversal of 40153018 is 81035104.

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

It can be written as a sum of positive squares in only one way, i.e., 21464689 + 18688329 = 4633^2 + 4323^2 .

It is a super-2 number, since 2×40153018² = 3224529709016648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40153018.

It is not an unprimeable number, because it can be changed into a prime (40153019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10038253 + ... + 10038256.

Almost surely, 2^40153018 is an apocalyptic number.

40153018 is a deficient number, since it is larger than the sum of its proper divisors (20076512).

40153018 is a wasteful number, since it uses less digits than its factorization.

40153018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20076511.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 40153018 is about 6336.6409082415. The cubic root of 40153018 is about 342.4307295931.

The spelling of 40153018 in words is "forty million, one hundred fifty-three thousand, eighteen".