1421316165 has 32 divisors (see below), whose sum is σ = 2411917056. Its totient is φ = 713180160.

The previous prime is 1421316163. The next prime is 1421316167. The reversal of 1421316165 is 5616131241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1421316163) and next prime (1421316167).

It is not a de Polignac number, because 1421316165 - 2¹ = 1421316163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421316163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12724 + ... + 54813.

It is an arithmetic number, because the mean of its divisors is an integer number (75372408).

Almost surely, 2^1421316165 is an apocalyptic number.

1421316165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1421316165 is a deficient number, since it is larger than the sum of its proper divisors (990600891).

1421316165 is a wasteful number, since it uses less digits than its factorization.

1421316165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67629.

The product of its digits is 4320, while the sum is 30.

The square root of 1421316165 is about 37700.3470143181. The cubic root of 1421316165 is about 1124.3380243820.

The spelling of 1421316165 in words is "one billion, four hundred twenty-one million, three hundred sixteen thousand, one hundred sixty-five".