1940194090 has 8 divisors (see below), whose sum is σ = 3492349380. Its totient is φ = 776077632.

The previous prime is 1940193977. The next prime is 1940194103. The reversal of 1940194090 is 904910491.

It can be written as a sum of positive squares in 2 ways, for example, as 1786161169 + 154032921 = 42263^2 + 12411^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97009695 + ... + 97009714.

Almost surely, 2^1940194090 is an apocalyptic number.

1940194090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1940194090 is a deficient number, since it is larger than the sum of its proper divisors (1552155290).

1940194090 is a wasteful number, since it uses less digits than its factorization.

1940194090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194019416.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1940194090 is about 44047.6343292123. The cubic root of 1940194090 is about 1247.2352955021.

The spelling of 1940194090 in words is "one billion, nine hundred forty million, one hundred ninety-four thousand, ninety".