1400377768 has 8 divisors (see below), whose sum is σ = 2625708330. Its totient is φ = 700188880.

The previous prime is 1400377763. The next prime is 1400377859. The reversal of 1400377768 is 8677730041.

It can be written as a sum of positive squares in only one way, i.e., 1130169924 + 270207844 = 33618^2 + 16438^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1400377768² = 3922115786217323648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1400377763) 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 as a sum of consecutive naturals, namely, 87523603 + ... + 87523618.

Almost surely, 2^1400377768 is an apocalyptic number.

It is an amenable number.

1400377768 is a deficient number, since it is larger than the sum of its proper divisors (1225330562).

1400377768 is a wasteful number, since it uses less digits than its factorization.

1400377768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175047227 (or 175047223 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 1400377768 is about 37421.6216644870. The cubic root of 1400377768 is about 1118.7895532430.

The spelling of 1400377768 in words is "one billion, four hundred million, three hundred seventy-seven thousand, seven hundred sixty-eight".