1649540814 has 32 divisors (see below), whose sum is σ = 3425255424. Its totient is φ = 529023840.

The previous prime is 1649540801. The next prime is 1649540831. The reversal of 1649540814 is 4180459461.

It is a congruent number.

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, 6547 + ... + 57809.

It is an arithmetic number, because the mean of its divisors is an integer number (107039232).

Almost surely, 2^1649540814 is an apocalyptic number.

1649540814 is an abundant number, since it is smaller than the sum of its proper divisors (1775714610).

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

1649540814 is a wasteful number, since it uses less digits than its factorization.

1649540814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51472.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1649540814 is about 40614.5394409441. The cubic root of 1649540814 is about 1181.5561232530.

The spelling of 1649540814 in words is "one billion, six hundred forty-nine million, five hundred forty thousand, eight hundred fourteen".