1894987901400 has 96 divisors (see below), whose sum is σ = 6408504561600. Its totient is φ = 459391004800.

The previous prime is 1894987901377. The next prime is 1894987901447. The reversal of 1894987901400 is 41097894981.

It is a super-2 number, since 2×1894987901400² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143553090 + ... + 143566289.

It is an arithmetic number, because the mean of its divisors is an integer number (66755255850).

Almost surely, 2^{1894987901400} is an apocalyptic number.

1894987901400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1894987901400 is an abundant number, since it is smaller than the sum of its proper divisors (4513516660200).

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

1894987901400 is a wasteful number, since it uses less digits than its factorization.

1894987901400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287119409 (or 287119400 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 60.

The spelling of 1894987901400 in words is "one trillion, eight hundred ninety-four billion, nine hundred eighty-seven million, nine hundred one thousand, four hundred".