1897403950012 has 6 divisors (see below), whose sum is σ = 3320456912528. Its totient is φ = 948701975004.

The previous prime is 1897403950009. The next prime is 1897403950063. The reversal of 1897403950012 is 2100593047981.

It is a happy number.

It is a super-2 number, since 2×1897403950012² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237175493748 + ... + 237175493755.

Almost surely, 2^{1897403950012} is an apocalyptic number.

It is an amenable number.

1897403950012 is a deficient number, since it is larger than the sum of its proper divisors (1423052962516).

1897403950012 is a wasteful number, since it uses less digits than its factorization.

1897403950012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474350987507 (or 474350987505 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

Adding to 1897403950012 its reverse (2100593047981), we get a palindrome (3997996997993).

The spelling of 1897403950012 in words is "one trillion, eight hundred ninety-seven billion, four hundred three million, nine hundred fifty thousand, twelve".