1415356981 has 12 divisors (see below), whose sum is σ = 1506873888. Its totient is φ = 1329121472.

The previous prime is 1415356939. The next prime is 1415356991. The reversal of 1415356981 is 1896535141.

It is not a de Polignac number, because 1415356981 - 2⁷ = 1415356853 is a prime.

It is a super-2 number, since 2×1415356981² = 4006470767330868722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1415356931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129720 + ... + 140206.

It is an arithmetic number, because the mean of its divisors is an integer number (125572824).

Almost surely, 2^1415356981 is an apocalyptic number.

It is an amenable number.

1415356981 is a deficient number, since it is larger than the sum of its proper divisors (91516907).

1415356981 is a wasteful number, since it uses less digits than its factorization.

1415356981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10988 (or 10971 counting only the distinct ones).

The product of its digits is 129600, while the sum is 43.

The square root of 1415356981 is about 37621.2304556882. The cubic root of 1415356981 is about 1122.7644774726.

The spelling of 1415356981 in words is "one billion, four hundred fifteen million, three hundred fifty-six thousand, nine hundred eighty-one".