1649359125 has 192 divisors, whose sum is σ = 3448224000. Its totient is φ = 775526400.

The previous prime is 1649359121. The next prime is 1649359133. The reversal of 1649359125 is 5219539461.

1649359125 is a `hidden beast` number, since 16 + 49 + 3 + 591 + 2 + 5 = 666.

It is not a de Polignac number, because 1649359125 - 2² = 1649359121 is a prime.

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 (1649359121) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 18532081 + ... + 18532169.

It is an arithmetic number, because the mean of its divisors is an integer number (17959500).

Almost surely, 2^1649359125 is an apocalyptic number.

1649359125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1649359125 is an abundant number, since it is smaller than the sum of its proper divisors (1798864875).

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

1649359125 is a wasteful number, since it uses less digits than its factorization.

1649359125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 133 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 1649359125 is about 40612.3026310994. The cubic root of 1649359125 is about 1181.5127407490.

The spelling of 1649359125 in words is "one billion, six hundred forty-nine million, three hundred fifty-nine thousand, one hundred twenty-five".