1897232509132 has 6 divisors (see below), whose sum is σ = 3320156890988. Its totient is φ = 948616254564.

The previous prime is 1897232509129. The next prime is 1897232509147. The reversal of 1897232509132 is 2319052327981.

It is a self number, because there is not a number n which added to its sum of digits gives 1897232509132.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237154063638 + ... + 237154063645.

Almost surely, 2^{1897232509132} is an apocalyptic number.

It is an amenable number.

1897232509132 is a deficient number, since it is larger than the sum of its proper divisors (1422924381856).

1897232509132 is a wasteful number, since it uses less digits than its factorization.

1897232509132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474308127287 (or 474308127285 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 1897232509132 in words is "one trillion, eight hundred ninety-seven billion, two hundred thirty-two million, five hundred nine thousand, one hundred thirty-two".