1831216486428 has 36 divisors (see below), whose sum is σ = 5290180961520. Its totient is φ = 523204710336.

The previous prime is 1831216486409. The next prime is 1831216486447. The reversal of 1831216486428 is 8246846121381.

1831216486428 is a `hidden beast` number, since 1 + 83 + 1 + 2 + 1 + 64 + 86 + 428 = 666.

It is an interprime number because it is at equal distance from previous prime (1831216486409) and next prime (1831216486447).

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

It is a super-5 number, since 5×1831216486428⁵ (a number of 63 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3633365793 + ... + 3633366296.

Almost surely, 2^{1831216486428} is an apocalyptic number.

1831216486428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1831216486428 is an abundant number, since it is smaller than the sum of its proper divisors (3458964475092).

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

1831216486428 is a wasteful number, since it uses less digits than its factorization.

1831216486428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7266732106 (or 7266732101 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 54.

The spelling of 1831216486428 in words is "one trillion, eight hundred thirty-one billion, two hundred sixteen million, four hundred eighty-six thousand, four hundred twenty-eight".