1649612195 has 32 divisors (see below), whose sum is σ = 2518387200. Its totient is φ = 1028317920.

The previous prime is 1649612149. The next prime is 1649612219. The reversal of 1649612195 is 5912169461.

It is not a de Polignac number, because 1649612195 - 2⁶ = 1649612131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24857 + ... + 62586.

It is an arithmetic number, because the mean of its divisors is an integer number (78699600).

Almost surely, 2^1649612195 is an apocalyptic number.

1649612195 is a deficient number, since it is larger than the sum of its proper divisors (868775005).

1649612195 is an equidigital number, since it uses as much as digits as its factorization.

1649612195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87480 (or 87466 counting only the distinct ones).

The product of its digits is 116640, while the sum is 44.

The square root of 1649612195 is about 40615.4181930951. The cubic root of 1649612195 is about 1181.5731662669.

The spelling of 1649612195 in words is "one billion, six hundred forty-nine million, six hundred twelve thousand, one hundred ninety-five".