1940230357 has 6 divisors (see below), whose sum is σ = 2100959682. Its totient is φ = 1790981712.

The previous prime is 1940230339. The next prime is 1940230361. The reversal of 1940230357 is 7530320491.

It can be written as a sum of positive squares in 3 ways, for example, as 47458321 + 1892772036 = 6889^2 + 43506^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1940230357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940230337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5740158 + ... + 5740495.

It is an arithmetic number, because the mean of its divisors is an integer number (350159947).

Almost surely, 2^1940230357 is an apocalyptic number.

It is an amenable number.

1940230357 is a deficient number, since it is larger than the sum of its proper divisors (160729325).

1940230357 is a wasteful number, since it uses less digits than its factorization.

1940230357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11480679 (or 11480666 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 1940230357 is about 44048.0460066051. The cubic root of 1940230357 is about 1247.2430667522.

The spelling of 1940230357 in words is "one billion, nine hundred forty million, two hundred thirty thousand, three hundred fifty-seven".