1481506421 has 2 divisors, whose sum is σ = 1481506422. Its totient is φ = 1481506420.

The previous prime is 1481506417. The next prime is 1481506427. The reversal of 1481506421 is 1246051841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1366780900 + 114725521 = 36970^2 + 10711^2 .

It is a cyclic number.

It is not a de Polignac number, because 1481506421 - 2² = 1481506417 is a prime.

It is a super-2 number, since 2×1481506421² = 4389722550928458482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1481506427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 740753210 + 740753211.

It is an arithmetic number, because the mean of its divisors is an integer number (740753211).

Almost surely, 2^1481506421 is an apocalyptic number.

It is an amenable number.

1481506421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1481506421 is an equidigital number, since it uses as much as digits as its factorization.

1481506421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 1481506421 is about 38490.3419184605. The cubic root of 1481506421 is about 1139.9903613118.

The spelling of 1481506421 in words is "one billion, four hundred eighty-one million, five hundred six thousand, four hundred twenty-one".