1400191056 has 240 divisors, whose sum is σ = 4591581120. Its totient is φ = 405123840.

The previous prime is 1400191031. The next prime is 1400191057. The reversal of 1400191056 is 6501910041.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400191057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2513530 + ... + 2514086.

It is an arithmetic number, because the mean of its divisors is an integer number (19131588).

Almost surely, 2^1400191056 is an apocalyptic number.

1400191056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400191056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2295790560).

1400191056 is an abundant number, since it is smaller than the sum of its proper divisors (3191390064).

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

1400191056 is a wasteful number, since it uses less digits than its factorization.

1400191056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1400191056 is about 37419.1268738329. The cubic root of 1400191056 is about 1118.7398283939.

The spelling of 1400191056 in words is "one billion, four hundred million, one hundred ninety-one thousand, fifty-six".