1400875481 has 2 divisors, whose sum is σ = 1400875482. Its totient is φ = 1400875480.

The previous prime is 1400875439. The next prime is 1400875493. The reversal of 1400875481 is 1845780041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1219057225 + 181818256 = 34915^2 + 13484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400875481 is a prime.

It is a super-2 number, since 2×1400875481² = 3924904226533962722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1400875381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700437740 + 700437741.

It is an arithmetic number, because the mean of its divisors is an integer number (700437741).

Almost surely, 2^1400875481 is an apocalyptic number.

It is an amenable number.

1400875481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400875481 is an equidigital number, since it uses as much as digits as its factorization.

1400875481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 1400875481 is about 37428.2711462873. The cubic root of 1400875481 is about 1118.9220818035.

The spelling of 1400875481 in words is "one billion, four hundred million, eight hundred seventy-five thousand, four hundred eighty-one".