1400133656 has 16 divisors (see below), whose sum is σ = 2644139400. Its totient is φ = 695029824.

The previous prime is 1400133653. The next prime is 1400133689. The reversal of 1400133656 is 6563310041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400133653) 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 3 ways as a sum of consecutive naturals, for example, 628445 + ... + 630668.

Almost surely, 2^1400133656 is an apocalyptic number.

It is an amenable number.

1400133656 is a deficient number, since it is larger than the sum of its proper divisors (1244005744).

1400133656 is a wasteful number, since it uses less digits than its factorization.

1400133656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259258 (or 1259254 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1400133656 is about 37418.3598785409. The cubic root of 1400133656 is about 1118.7245408270.

Adding to 1400133656 its reverse (6563310041), we get a palindrome (7963443697).

The spelling of 1400133656 in words is "one billion, four hundred million, one hundred thirty-three thousand, six hundred fifty-six".