1957350381 has 16 divisors (see below), whose sum is σ = 2983488000. Its totient is φ = 1118163888.

The previous prime is 1957350377. The next prime is 1957350383. The reversal of 1957350381 is 1830537591.

It is not a de Polignac number, because 1957350381 - 2² = 1957350377 is a prime.

It is a super-2 number, since 2×1957350381² = 7662441028001690322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1957350383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74710 + ... + 97448.

It is an arithmetic number, because the mean of its divisors is an integer number (186468000).

Almost surely, 2^1957350381 is an apocalyptic number.

It is an amenable number.

1957350381 is a deficient number, since it is larger than the sum of its proper divisors (1026137619).

1957350381 is a wasteful number, since it uses less digits than its factorization.

1957350381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26848.

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 1957350381 is about 44241.9527258913. The cubic root of 1957350381 is about 1250.9007653548.

The spelling of 1957350381 in words is "one billion, nine hundred fifty-seven million, three hundred fifty thousand, three hundred eighty-one".