1394775157 has 12 divisors (see below), whose sum is σ = 1459933824. Its totient is φ = 1331134560.

The previous prime is 1394775127. The next prime is 1394775167. The reversal of 1394775157 is 7515774931.

It is a de Polignac number, because none of the positive numbers 2^k-1394775157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1394775157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1394775127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160978 + ... + 169420.

It is an arithmetic number, because the mean of its divisors is an integer number (121661152).

Almost surely, 2^1394775157 is an apocalyptic number.

It is an amenable number.

1394775157 is a deficient number, since it is larger than the sum of its proper divisors (65158667).

1394775157 is an frugal number, since it uses more digits than its factorization.

1394775157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620 (or 8547 counting only the distinct ones).

The product of its digits is 926100, while the sum is 49.

The square root of 1394775157 is about 37346.6887019452. The cubic root of 1394775157 is about 1117.2955467459.

The spelling of 1394775157 in words is "one billion, three hundred ninety-four million, seven hundred seventy-five thousand, one hundred fifty-seven".