1899948401 has 8 divisors (see below), whose sum is σ = 2046448320. Its totient is φ = 1753498512.

The previous prime is 1899948397. The next prime is 1899948431. The reversal of 1899948401 is 1048499981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1899948401 - 2² = 1899948397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1899948431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113306 + ... + 128988.

It is an arithmetic number, because the mean of its divisors is an integer number (255806040).

Almost surely, 2^1899948401 is an apocalyptic number.

It is an amenable number.

1899948401 is a deficient number, since it is larger than the sum of its proper divisors (146499919).

1899948401 is a wasteful number, since it uses less digits than its factorization.

1899948401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25015.

The product of its (nonzero) digits is 746496, while the sum is 53.

The square root of 1899948401 is about 43588.3975502656. The cubic root of 1899948401 is about 1238.5511174975.

The spelling of 1899948401 in words is "one billion, eight hundred ninety-nine million, nine hundred forty-eight thousand, four hundred one".