1947907345 has 16 divisors (see below), whose sum is σ = 2506325760. Its totient is φ = 1448089344.

The previous prime is 1947907333. The next prime is 1947907363. The reversal of 1947907345 is 5437097491.

It is a cyclic number.

It is not a de Polignac number, because 1947907345 - 2¹⁷ = 1947776273 is a prime.

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, 138327 + ... + 151756.

It is an arithmetic number, because the mean of its divisors is an integer number (156645360).

Almost surely, 2^1947907345 is an apocalyptic number.

It is an amenable number.

1947907345 is a deficient number, since it is larger than the sum of its proper divisors (558418415).

1947907345 is a wasteful number, since it uses less digits than its factorization.

1947907345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290184.

The product of its (nonzero) digits is 952560, while the sum is 49.

The square root of 1947907345 is about 44135.1033192401. The cubic root of 1947907345 is about 1248.8859076002.

The spelling of 1947907345 in words is "one billion, nine hundred forty-seven million, nine hundred seven thousand, three hundred forty-five".