1421669931 has 16 divisors (see below), whose sum is σ = 2189524608. Its totient is φ = 810934400.

The previous prime is 1421669923. The next prime is 1421669939. The reversal of 1421669931 is 1399661241.

It is an interprime number because it is at equal distance from previous prime (1421669923) and next prime (1421669939).

It is a cyclic number.

It is not a de Polignac number, because 1421669931 - 2³ = 1421669923 is a prime.

It is a super-2 number, since 2×1421669931² = 4042290785419089522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1421669939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1266525 + ... + 1267646.

It is an arithmetic number, because the mean of its divisors is an integer number (136845288).

Almost surely, 2^1421669931 is an apocalyptic number.

1421669931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1421669931 is a deficient number, since it is larger than the sum of its proper divisors (767854677).

1421669931 is a wasteful number, since it uses less digits than its factorization.

1421669931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534202.

The product of its digits is 69984, while the sum is 42.

The square root of 1421669931 is about 37705.0385359835. The cubic root of 1421669931 is about 1124.4312993290.

The spelling of 1421669931 in words is "one billion, four hundred twenty-one million, six hundred sixty-nine thousand, nine hundred thirty-one".