1953399031 has 2 divisors, whose sum is σ = 1953399032. Its totient is φ = 1953399030.

The previous prime is 1953399029. The next prime is 1953399061. The reversal of 1953399031 is 1309933591.

It is a weak prime.

It is an emirp because it is prime and its reverse (1309933591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1953399031 - 2¹ = 1953399029 is a prime.

It is a super-2 number, since 2×1953399031² = 7631535548623477922, which contains 22 as substring.

Together with 1953399029, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1953399011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976699515 + 976699516.

It is an arithmetic number, because the mean of its divisors is an integer number (976699516).

Almost surely, 2^1953399031 is an apocalyptic number.

1953399031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1953399031 is an equidigital number, since it uses as much as digits as its factorization.

1953399031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98415, while the sum is 43.

The square root of 1953399031 is about 44197.2740222743. The cubic root of 1953399031 is about 1250.0584572128.

The spelling of 1953399031 in words is "one billion, nine hundred fifty-three million, three hundred ninety-nine thousand, thirty-one".