1640152476 has 30 divisors (see below), whose sum is σ = 4287683400. Its totient is φ = 546717384.

The previous prime is 1640152463. The next prime is 1640152489. The reversal of 1640152476 is 6742510461.

1640152476 is a `hidden beast` number, since 1 + 6 + 401 + 5 + 247 + 6 = 666.

1640152476 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1640152463) and next prime (1640152489).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1640152476.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2530776 + ... + 2531423.

It is an arithmetic number, because the mean of its divisors is an integer number (142922780).

Almost surely, 2^1640152476 is an apocalyptic number.

It is an amenable number.

1640152476 is an abundant number, since it is smaller than the sum of its proper divisors (2647530924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1640152476 is a wasteful number, since it uses less digits than its factorization.

1640152476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5062215 (or 5062204 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1640152476 is about 40498.7959821030. The cubic root of 1640152476 is about 1179.3102538001.

The spelling of 1640152476 in words is "one billion, six hundred forty million, one hundred fifty-two thousand, four hundred seventy-six".