1640471210 has 32 divisors (see below), whose sum is σ = 3552301440. Its totient is φ = 532844352.

The previous prime is 1640471167. The next prime is 1640471263. The reversal of 1640471210 is 121740461.

It is a super-2 number, since 2×1640471210² = 5382291581677728200, 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 1640471210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615389 + ... + 618048.

It is an arithmetic number, because the mean of its divisors is an integer number (111009420).

Almost surely, 2^1640471210 is an apocalyptic number.

1640471210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1640471210 is an abundant number, since it is smaller than the sum of its proper divisors (1911830230).

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

1640471210 is a wasteful number, since it uses less digits than its factorization.

1640471210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233470.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1640471210 is about 40502.7308955828. The cubic root of 1640471210 is about 1179.3866413989.

The spelling of 1640471210 in words is "one billion, six hundred forty million, four hundred seventy-one thousand, two hundred ten".