1400943645 has 24 divisors (see below), whose sum is σ = 2430669696. Its totient is φ = 746441568.

The previous prime is 1400943641. The next prime is 1400943653. The reversal of 1400943645 is 5463490041.

1400943645 is a `hidden beast` number, since 1 + 4 + 0 + 0 + 9 + 4 + 3 + 645 = 666.

It is not a de Polignac number, because 1400943645 - 2² = 1400943641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400943641) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 33192 + ... + 62478.

It is an arithmetic number, because the mean of its divisors is an integer number (101277904).

Almost surely, 2^1400943645 is an apocalyptic number.

1400943645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1400943645 is a deficient number, since it is larger than the sum of its proper divisors (1029726051).

1400943645 is a wasteful number, since it uses less digits than its factorization.

1400943645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30361 (or 30358 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1400943645 is about 37429.1817303024. The cubic root of 1400943645 is about 1118.9402297328.

The spelling of 1400943645 in words is "one billion, four hundred million, nine hundred forty-three thousand, six hundred forty-five".