1671652500 has 240 divisors, whose sum is σ = 5901211008. Its totient is φ = 359424000.

The previous prime is 1671652457. The next prime is 1671652501. The reversal of 1671652500 is 52561761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671652501) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 891564 + ... + 893436.

Almost surely, 2^1671652500 is an apocalyptic number.

1671652500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1671652500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2950605504).

1671652500 is an abundant number, since it is smaller than the sum of its proper divisors (4229558508).

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

1671652500 is a wasteful number, since it uses less digits than its factorization.

1671652500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 1671652500 is about 40885.8471845699. The cubic root of 1671652500 is about 1186.8121963434.

The spelling of 1671652500 in words is "one billion, six hundred seventy-one million, six hundred fifty-two thousand, five hundred".