1394157961 has 8 divisors (see below), whose sum is σ = 1593767744. Its totient is φ = 1194659280.

The previous prime is 1394157931. The next prime is 1394157991. The reversal of 1394157961 is 1697514931.

It is an interprime number because it is at equal distance from previous prime (1394157931) and next prime (1394157991).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1394157961 - 2⁹ = 1394157449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1394157901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126 + ... + 52816.

It is an arithmetic number, because the mean of its divisors is an integer number (199220968).

Almost surely, 2^1394157961 is an apocalyptic number.

It is an amenable number.

1394157961 is a deficient number, since it is larger than the sum of its proper divisors (199609783).

1394157961 is an equidigital number, since it uses as much as digits as its factorization.

1394157961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55551.

The product of its digits is 204120, while the sum is 46.

The square root of 1394157961 is about 37338.4247257433. The cubic root of 1394157961 is about 1117.1307192037.

The spelling of 1394157961 in words is "one billion, three hundred ninety-four million, one hundred fifty-seven thousand, nine hundred sixty-one".