1649627260 has 24 divisors (see below), whose sum is σ = 3486288960. Its totient is φ = 655646784.

The previous prime is 1649627237. The next prime is 1649627267. The reversal of 1649627260 is 627269461.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649627267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259540 + ... + 265819.

It is an arithmetic number, because the mean of its divisors is an integer number (145262040).

Almost surely, 2^1649627260 is an apocalyptic number.

1649627260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1649627260 is an abundant number, since it is smaller than the sum of its proper divisors (1836661700).

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

1649627260 is a wasteful number, since it uses less digits than its factorization.

1649627260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525525 (or 525523 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 1649627260 is about 40615.6036517987. The cubic root of 1649627260 is about 1181.5767631417.

The spelling of 1649627260 in words is "one billion, six hundred forty-nine million, six hundred twenty-seven thousand, two hundred sixty".