1641995098 has 4 divisors (see below), whose sum is σ = 2462992650. Its totient is φ = 820997548.

The previous prime is 1641995081. The next prime is 1641995111. The reversal of 1641995098 is 8905991461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1619499049 + 22496049 = 40243^2 + 4743^2 .

It is a super-2 number, since 2×1641995098² = 5392295803712059208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410498773 + ... + 410498776.

Almost surely, 2^1641995098 is an apocalyptic number.

1641995098 is a deficient number, since it is larger than the sum of its proper divisors (820997552).

1641995098 is an equidigital number, since it uses as much as digits as its factorization.

1641995098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820997551.

The product of its (nonzero) digits is 699840, while the sum is 52.

The square root of 1641995098 is about 40521.5386924041. The cubic root of 1641995098 is about 1179.7517188062.

The spelling of 1641995098 in words is "one billion, six hundred forty-one million, nine hundred ninety-five thousand, ninety-eight".