1649251017 has 16 divisors (see below), whose sum is σ = 2444057280. Its totient is φ = 1099175616.

The previous prime is 1649251001. The next prime is 1649251069. The reversal of 1649251017 is 7101529461.

1649251017 is a `hidden beast` number, since 1 + 649 + 2 + 5 + 1 + 0 + 1 + 7 = 666.

It is not a de Polignac number, because 1649251017 - 2⁴ = 1649251001 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1649251517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114913 + ... + 128465.

It is an arithmetic number, because the mean of its divisors is an integer number (152753580).

Almost surely, 2^1649251017 is an apocalyptic number.

It is an amenable number.

1649251017 is a deficient number, since it is larger than the sum of its proper divisors (794806263).

1649251017 is a wasteful number, since it uses less digits than its factorization.

1649251017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18069 (or 18063 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1649251017 is about 40610.9716332914. The cubic root of 1649251017 is about 1181.4869259203.

The spelling of 1649251017 in words is "one billion, six hundred forty-nine million, two hundred fifty-one thousand, seventeen".