1897151245452 has 36 divisors (see below), whose sum is σ = 4897610311776. Its totient is φ = 618928774560.

The previous prime is 1897151245447. The next prime is 1897151245453. The reversal of 1897151245452 is 2545421517981.

1897151245452 is a `hidden beast` number, since 1 + 8 + 9 + 71 + 5 + 1 + 24 + 545 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1897151245453) 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, 560622199 + ... + 560625582.

Almost surely, 2^{1897151245452} is an apocalyptic number.

1897151245452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1897151245452 is an abundant number, since it is smaller than the sum of its proper divisors (3000459066324).

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

1897151245452 is a wasteful number, since it uses less digits than its factorization.

1897151245452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121247838 (or 1121247833 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 54.

The spelling of 1897151245452 in words is "one trillion, eight hundred ninety-seven billion, one hundred fifty-one million, two hundred forty-five thousand, four hundred fifty-two".