1649754417 has 4 divisors (see below), whose sum is σ = 2199672560. Its totient is φ = 1099836276.

The previous prime is 1649754413. The next prime is 1649754427. The reversal of 1649754417 is 7144579461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1649754417 - 2² = 1649754413 is a prime.

It is a super-2 number, since 2×1649754417² = 5443379272822019778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1649754413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274959067 + ... + 274959072.

It is an arithmetic number, because the mean of its divisors is an integer number (549918140).

Almost surely, 2^1649754417 is an apocalyptic number.

It is an amenable number.

1649754417 is a deficient number, since it is larger than the sum of its proper divisors (549918143).

1649754417 is an equidigital number, since it uses as much as digits as its factorization.

1649754417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549918142.

The product of its digits is 846720, while the sum is 48.

The square root of 1649754417 is about 40617.1689929271. The cubic root of 1649754417 is about 1181.6071218981.

The spelling of 1649754417 in words is "one billion, six hundred forty-nine million, seven hundred fifty-four thousand, four hundred seventeen".