1649793510 has 48 divisors (see below), whose sum is σ = 4306214016. Its totient is φ = 438226944.

The previous prime is 1649793491. The next prime is 1649793511. The reversal of 1649793510 is 153979461.

1649793510 is a `hidden beast` number, since 1 + 6 + 49 + 7 + 93 + 510 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649793511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12534 + ... + 58793.

It is an arithmetic number, because the mean of its divisors is an integer number (89712792).

Almost surely, 2^1649793510 is an apocalyptic number.

1649793510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1649793510 is an abundant number, since it is smaller than the sum of its proper divisors (2656420506).

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

1649793510 is a wasteful number, since it uses less digits than its factorization.

1649793510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71597 (or 71594 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 1649793510 is about 40617.6502274565. The cubic root of 1649793510 is about 1181.6164550453.

The spelling of 1649793510 in words is "one billion, six hundred forty-nine million, seven hundred ninety-three thousand, five hundred ten".