1912561485 has 16 divisors (see below), whose sum is σ = 3075958464. Its totient is φ = 1014746112.

The previous prime is 1912561471. The next prime is 1912561493. The reversal of 1912561485 is 5841652191.

It is not a de Polignac number, because 1912561485 - 2⁸ = 1912561229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327427 + ... + 333216.

It is an arithmetic number, because the mean of its divisors is an integer number (192247404).

Almost surely, 2^1912561485 is an apocalyptic number.

1912561485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1912561485 is a deficient number, since it is larger than the sum of its proper divisors (1163396979).

1912561485 is a wasteful number, since it uses less digits than its factorization.

1912561485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660844.

The product of its digits is 86400, while the sum is 42.

The square root of 1912561485 is about 43732.8421783904. The cubic root of 1912561485 is about 1241.2858420621.

The spelling of 1912561485 in words is "one billion, nine hundred twelve million, five hundred sixty-one thousand, four hundred eighty-five".