1894873874397 has 16 divisors (see below), whose sum is σ = 2897281564800. Its totient is φ = 1079089555392.

The previous prime is 1894873874363. The next prime is 1894873874407. The reversal of 1894873874397 is 7934783784981.

It is not a de Polignac number, because 1894873874397 - 2⁷ = 1894873874269 is a prime.

It is a super-2 number, since 2×1894873874397² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894873874497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153973522 + ... + 153985827.

It is an arithmetic number, because the mean of its divisors is an integer number (181080097800).

Almost surely, 2^{1894873874397} is an apocalyptic number.

It is an amenable number.

1894873874397 is a deficient number, since it is larger than the sum of its proper divisors (1002407690403).

1894873874397 is a wasteful number, since it uses less digits than its factorization.

1894873874397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307959652.

The product of its digits is 2048385024, while the sum is 78.

The spelling of 1894873874397 in words is "one trillion, eight hundred ninety-four billion, eight hundred seventy-three million, eight hundred seventy-four thousand, three hundred ninety-seven".