1420331769 has 12 divisors (see below), whose sum is σ = 2051949796. Its totient is φ = 946721952.

The previous prime is 1420331761. The next prime is 1420331771. The reversal of 1420331769 is 9671330241.

It can be written as a sum of positive squares in 2 ways, for example, as 832899600 + 587432169 = 28860^2 + 24237^2 .

It is not a de Polignac number, because 1420331769 - 2³ = 1420331761 is a prime.

It is a super-2 number, since 2×1420331769² = 4034684668061338722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420331761) 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, 62679 + ... + 82275.

Almost surely, 2^1420331769 is an apocalyptic number.

It is an amenable number.

1420331769 is a deficient number, since it is larger than the sum of its proper divisors (631618027).

1420331769 is a wasteful number, since it uses less digits than its factorization.

1420331769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27656 (or 27653 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 1420331769 is about 37687.2892232912. The cubic root of 1420331769 is about 1124.0783942591.

The spelling of 1420331769 in words is "one billion, four hundred twenty million, three hundred thirty-one thousand, seven hundred sixty-nine".