1640410454 has 8 divisors (see below), whose sum is σ = 2462272680. Its totient is φ = 819652896.

The previous prime is 1640410411. The next prime is 1640410459. The reversal of 1640410454 is 4540140461.

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

It is a super-2 number, since 2×1640410454² = 5381892915184972232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640410459) 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, 272444 + ... + 278399.

It is an arithmetic number, because the mean of its divisors is an integer number (307784085).

Almost surely, 2^1640410454 is an apocalyptic number.

1640410454 is a deficient number, since it is larger than the sum of its proper divisors (821862226).

1640410454 is a wasteful number, since it uses less digits than its factorization.

1640410454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552334.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 1640410454 is about 40501.9808651379. The cubic root of 1640410454 is about 1179.3720814158.

The spelling of 1640410454 in words is "one billion, six hundred forty million, four hundred ten thousand, four hundred fifty-four".