1378794153 has 24 divisors (see below), whose sum is σ = 2040385984. Its totient is φ = 827497440.

The previous prime is 1378794119. The next prime is 1378794173. The reversal of 1378794153 is 3514978731.

It is not a de Polignac number, because 1378794153 - 2¹⁸ = 1378532009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1378794113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18951 + ... + 55827.

Almost surely, 2^1378794153 is an apocalyptic number.

It is an amenable number.

1378794153 is a deficient number, since it is larger than the sum of its proper divisors (661591831).

1378794153 is a wasteful number, since it uses less digits than its factorization.

1378794153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37005 (or 36994 counting only the distinct ones).

The product of its digits is 635040, while the sum is 48.

The square root of 1378794153 is about 37132.1175399411. The cubic root of 1378794153 is about 1113.0119084689.

The spelling of 1378794153 in words is "one billion, three hundred seventy-eight million, seven hundred ninety-four thousand, one hundred fifty-three".