1901143492 has 12 divisors (see below), whose sum is σ = 3376658320. Its totient is φ = 936383976.

The previous prime is 1901143487. The next prime is 1901143501. The reversal of 1901143492 is 2943411091.

It is a super-2 number, since 2×1901143492² = 7228693154347908128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3546642 + ... + 3547177.

Almost surely, 2^1901143492 is an apocalyptic number.

It is an amenable number.

1901143492 is a deficient number, since it is larger than the sum of its proper divisors (1475514828).

1901143492 is a wasteful number, since it uses less digits than its factorization.

1901143492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7093890 (or 7093888 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1901143492 is about 43602.1042152784. The cubic root of 1901143492 is about 1238.8107510487.

The spelling of 1901143492 in words is "one billion, nine hundred one million, one hundred forty-three thousand, four hundred ninety-two".