1400643012 has 24 divisors (see below), whose sum is σ = 3276800800. Its totient is φ = 465647616.

The previous prime is 1400642987. The next prime is 1400643017. The reversal of 1400643012 is 2103460041.

It is a super-3 number, since 3×1400643012³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1400643012.

It is not an unprimeable number, because it can be changed into a prime (1400643017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149437 + ... + 158532.

Almost surely, 2^1400643012 is an apocalyptic number.

1400643012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1400643012 is an abundant number, since it is smaller than the sum of its proper divisors (1876157788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1400643012 is a wasteful number, since it uses less digits than its factorization.

1400643012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308355 (or 308353 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1400643012 is about 37425.1654906161. The cubic root of 1400643012 is about 1118.8601850133.

The spelling of 1400643012 in words is "one billion, four hundred million, six hundred forty-three thousand, twelve".