1881301428 has 36 divisors (see below), whose sum is σ = 4866109248. Its totient is φ = 612516240.

The previous prime is 1881301421. The next prime is 1881301459. The reversal of 1881301428 is 8241031881.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1881301392 and 1881301401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881301421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 606108 + ... + 609203.

Almost surely, 2^1881301428 is an apocalyptic number.

1881301428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1881301428 is an abundant number, since it is smaller than the sum of its proper divisors (2984807820).

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

1881301428 is a wasteful number, since it uses less digits than its factorization.

1881301428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215364 (or 1215359 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 1881301428 is about 43373.9717803200. The cubic root of 1881301428 is about 1234.4858843447.

The spelling of 1881301428 in words is "one billion, eight hundred eighty-one million, three hundred one thousand, four hundred twenty-eight".