1416686981 has 4 divisors (see below), whose sum is σ = 1451240364. Its totient is φ = 1382133600.

The previous prime is 1416686941. The next prime is 1416687007. The reversal of 1416686981 is 1896866141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1896866141 = 139 ⋅13646519.

It can be written as a sum of positive squares in 2 ways, for example, as 569585956 + 847101025 = 23866^2 + 29105^2 .

It is a cyclic number.

It is not a de Polignac number, because 1416686981 - 2²² = 1412492677 is a prime.

It is a super-2 number, since 2×1416686981² = 4014004004269788722, 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 (1416686941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17276630 + ... + 17276711.

It is an arithmetic number, because the mean of its divisors is an integer number (362810091).

Almost surely, 2^1416686981 is an apocalyptic number.

It is an amenable number.

1416686981 is a deficient number, since it is larger than the sum of its proper divisors (34553383).

1416686981 is an equidigital number, since it uses as much as digits as its factorization.

1416686981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34553382.

The product of its digits is 497664, while the sum is 50.

The square root of 1416686981 is about 37638.9024946265. The cubic root of 1416686981 is about 1123.1160517348.

The spelling of 1416686981 in words is "one billion, four hundred sixteen million, six hundred eighty-six thousand, nine hundred eighty-one".