1889415501428 has 48 divisors (see below), whose sum is σ = 4111464102144. Its totient is φ = 739755279360.

The previous prime is 1889415501367. The next prime is 1889415501431. The reversal of 1889415501428 is 8241055149881.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26720888 + ... + 26791503.

It is an arithmetic number, because the mean of its divisors is an integer number (85655502128).

Almost surely, 2^{1889415501428} is an apocalyptic number.

It is an amenable number.

1889415501428 is an abundant number, since it is smaller than the sum of its proper divisors (2222048600716).

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

1889415501428 is a wasteful number, since it uses less digits than its factorization.

1889415501428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53512512 (or 53512510 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 56.

The spelling of 1889415501428 in words is "one trillion, eight hundred eighty-nine billion, four hundred fifteen million, five hundred one thousand, four hundred twenty-eight".