1400002191 has 32 divisors (see below), whose sum is σ = 2446848000. Its totient is φ = 774191520.

The previous prime is 1400002183. The next prime is 1400002217. The reversal of 1400002191 is 1912000041.

It is not a de Polignac number, because 1400002191 - 2³ = 1400002183 is a prime.

It is a super-2 number, since 2×1400002191² = 3920012269609600962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400002171) 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 in 31 ways as a sum of consecutive naturals, for example, 113616 + ... + 125333.

It is an arithmetic number, because the mean of its divisors is an integer number (76464000).

Almost surely, 2^1400002191 is an apocalyptic number.

1400002191 is a deficient number, since it is larger than the sum of its proper divisors (1046845809).

1400002191 is a wasteful number, since it uses less digits than its factorization.

1400002191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238996 (or 238990 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1400002191 is about 37416.6031461970. The cubic root of 1400002191 is about 1118.6895256638.

The spelling of 1400002191 in words is "one billion, four hundred million, two thousand, one hundred ninety-one".