1868537148 has 72 divisors (see below), whose sum is σ = 4527073152. Its totient is φ = 599783616.

The previous prime is 1868537137. The next prime is 1868537149. The reversal of 1868537148 is 8417358681.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1868537148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868537149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1757265 + ... + 1758327.

It is an arithmetic number, because the mean of its divisors is an integer number (62876016).

Almost surely, 2^1868537148 is an apocalyptic number.

It is an amenable number.

1868537148 is an abundant number, since it is smaller than the sum of its proper divisors (2658536004).

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

1868537148 is a wasteful number, since it uses less digits than its factorization.

1868537148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1212 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 51.

The square root of 1868537148 is about 43226.5791845712. The cubic root of 1868537148 is about 1231.6876272407.

The spelling of 1868537148 in words is "one billion, eight hundred sixty-eight million, five hundred thirty-seven thousand, one hundred forty-eight".