1400665552 has 80 divisors (see below), whose sum is σ = 3236167872. Its totient is φ = 578856960.

The previous prime is 1400665549. The next prime is 1400665559. The reversal of 1400665552 is 2555660041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400665559) 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 15 ways as a sum of consecutive naturals, for example, 148728 + ... + 157864.

Almost surely, 2^1400665552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400665552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1618083936).

1400665552 is an abundant number, since it is smaller than the sum of its proper divisors (1835502320).

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

1400665552 is a wasteful number, since it uses less digits than its factorization.

1400665552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9236 (or 9230 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1400665552 is about 37425.4666236775. The cubic root of 1400665552 is about 1118.8661867742.

The spelling of 1400665552 in words is "one billion, four hundred million, six hundred sixty-five thousand, five hundred fifty-two".