1395684945 has 32 divisors (see below), whose sum is σ = 2561264640. Its totient is φ = 720351360.

The previous prime is 1395684929. The next prime is 1395684949. The reversal of 1395684945 is 5494865931.

1395684945 is a `hidden beast` number, since 1 + 3 + 95 + 68 + 494 + 5 = 666.

It is not a de Polignac number, because 1395684945 - 2⁴ = 1395684929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1395684891 and 1395684900.

It is not an unprimeable number, because it can be changed into a prime (1395684949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162564 + ... + 170933.

It is an arithmetic number, because the mean of its divisors is an integer number (80039520).

Almost surely, 2^1395684945 is an apocalyptic number.

1395684945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1395684945 is a deficient number, since it is larger than the sum of its proper divisors (1165579695).

1395684945 is a wasteful number, since it uses less digits than its factorization.

1395684945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333542 (or 333536 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 1395684945 is about 37358.8670197585. The cubic root of 1395684945 is about 1117.5384248758.

The spelling of 1395684945 in words is "one billion, three hundred ninety-five million, six hundred eighty-four thousand, nine hundred forty-five".