1868793901 has 32 divisors (see below), whose sum is σ = 2232921600. Its totient is φ = 1547320320.

The previous prime is 1868793881. The next prime is 1868793917. The reversal of 1868793901 is 1093978681.

It is a happy number.

It is not a de Polignac number, because 1868793901 - 2⁵ = 1868793869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868793301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 504466 + ... + 508156.

It is an arithmetic number, because the mean of its divisors is an integer number (69778800).

Almost surely, 2^1868793901 is an apocalyptic number.

It is an amenable number.

1868793901 is a deficient number, since it is larger than the sum of its proper divisors (364127699).

1868793901 is a wasteful number, since it uses less digits than its factorization.

1868793901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3829.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 1868793901 is about 43229.5489335709. The cubic root of 1868793901 is about 1231.7440394649.

The spelling of 1868793901 in words is "one billion, eight hundred sixty-eight million, seven hundred ninety-three thousand, nine hundred one".