1640100498 has 16 divisors (see below), whose sum is σ = 3292967520. Its totient is φ = 544572416.

The previous prime is 1640100493. The next prime is 1640100533. The reversal of 1640100498 is 8940010461.

It is not an unprimeable number, because it can be changed into a prime (1640100493) 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, 530268 + ... + 533351.

It is an arithmetic number, because the mean of its divisors is an integer number (205810470).

Almost surely, 2^1640100498 is an apocalyptic number.

1640100498 is an abundant number, since it is smaller than the sum of its proper divisors (1652867022).

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

1640100498 is a wasteful number, since it uses less digits than its factorization.

1640100498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063881.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1640100498 is about 40498.1542542373. The cubic root of 1640100498 is about 1179.2977958454.

The spelling of 1640100498 in words is "one billion, six hundred forty million, one hundred thousand, four hundred ninety-eight".