1639513098 has 12 divisors (see below), whose sum is σ = 3552278418. Its totient is φ = 546504360.

The previous prime is 1639513091. The next prime is 1639513111. The reversal of 1639513098 is 8903159361.

1639513098 is a `hidden beast` number, since 1 + 639 + 5 + 1 + 3 + 0 + 9 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1568397609 + 71115489 = 39603^2 + 8433^2 .

It is not an unprimeable number, because it can be changed into a prime (1639513091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45542013 + ... + 45542048.

Almost surely, 2^1639513098 is an apocalyptic number.

1639513098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1639513098 is an abundant number, since it is smaller than the sum of its proper divisors (1912765320).

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

1639513098 is a wasteful number, since it uses less digits than its factorization.

1639513098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91084069 (or 91084066 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 1639513098 is about 40490.9014224183. The cubic root of 1639513098 is about 1179.1569910102.

The spelling of 1639513098 in words is "one billion, six hundred thirty-nine million, five hundred thirteen thousand, ninety-eight".