1940320153 has 2 divisors, whose sum is σ = 1940320154. Its totient is φ = 1940320152.

The previous prime is 1940320111. The next prime is 1940320169. The reversal of 1940320153 is 3510230491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1356227929 + 584092224 = 36827^2 + 24168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1940320153 is a prime.

It is a super-2 number, since 2×1940320153² = 7529684592275886818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1940320103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970160076 + 970160077.

It is an arithmetic number, because the mean of its divisors is an integer number (970160077).

Almost surely, 2^1940320153 is an apocalyptic number.

It is an amenable number.

1940320153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940320153 is an equidigital number, since it uses as much as digits as its factorization.

1940320153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1940320153 is about 44049.0652908776. The cubic root of 1940320153 is about 1247.2623077168.

The spelling of 1940320153 in words is "one billion, nine hundred forty million, three hundred twenty thousand, one hundred fifty-three".