1381694607 has 6 divisors (see below), whose sum is σ = 1995781112. Its totient is φ = 921129732.

The previous prime is 1381694603. The next prime is 1381694621. The reversal of 1381694607 is 7064961831.

It is a happy number.

1381694607 is a `hidden beast` number, since 1 + 38 + 1 + 6 + 9 + 4 + 607 = 666.

It is not a de Polignac number, because 1381694607 - 2² = 1381694603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381694603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76760803 + ... + 76760820.

Almost surely, 2^1381694607 is an apocalyptic number.

1381694607 is a deficient number, since it is larger than the sum of its proper divisors (614086505).

1381694607 is a wasteful number, since it uses less digits than its factorization.

1381694607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153521629 (or 153521626 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1381694607 is about 37171.1528876897. The cubic root of 1381694607 is about 1113.7918118885.

The spelling of 1381694607 in words is "one billion, three hundred eighty-one million, six hundred ninety-four thousand, six hundred seven".