1400480138 has 4 divisors (see below), whose sum is σ = 2100720210. Its totient is φ = 700240068.

The previous prime is 1400480131. The next prime is 1400480141. The reversal of 1400480138 is 8310840041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1398984409 + 1495729 = 37403^2 + 1223^2 .

It is a super-2 number, since 2×1400480138² = 3922689233864998088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1400480138.

It is not an unprimeable number, because it can be changed into a prime (1400480131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350120033 + ... + 350120036.

Almost surely, 2^1400480138 is an apocalyptic number.

1400480138 is a deficient number, since it is larger than the sum of its proper divisors (700240072).

1400480138 is an equidigital number, since it uses as much as digits as its factorization.

1400480138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700240071.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1400480138 is about 37422.9894316315. The cubic root of 1400480138 is about 1118.8168143861.

The spelling of 1400480138 in words is "one billion, four hundred million, four hundred eighty thousand, one hundred thirty-eight".