1864543738050 has 144 divisors (see below), whose sum is σ = 6026355092160. Its totient is φ = 403750811520.

The previous prime is 1864543738027. The next prime is 1864543738097. The reversal of 1864543738050 is 508373454681.

1864543738050 is a `hidden beast` number, since 1 + 8 + 64 + 543 + 7 + 38 + 0 + 5 + 0 = 666.

It is a super-2 number, since 2×1864543738050² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 15516957 + ... + 15636656.

It is an arithmetic number, because the mean of its divisors is an integer number (41849688140).

Almost surely, 2^{1864543738050} is an apocalyptic number.

1864543738050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1864543738050 is an abundant number, since it is smaller than the sum of its proper divisors (4161811354110).

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

1864543738050 is a wasteful number, since it uses less digits than its factorization.

1864543738050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31153657 (or 31153649 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 1864543738050 in words is "one trillion, eight hundred sixty-four billion, five hundred forty-three million, seven hundred thirty-eight thousand, fifty".