1421613564 has 24 divisors (see below), whose sum is σ = 3790969728. Its totient is φ = 406175280.

The previous prime is 1421613551. The next prime is 1421613577. The reversal of 1421613564 is 4653161241.

It is an interprime number because it is at equal distance from previous prime (1421613551) and next prime (1421613577).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8461902 + ... + 8462069.

It is an arithmetic number, because the mean of its divisors is an integer number (157957072).

Almost surely, 2^1421613564 is an apocalyptic number.

1421613564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1421613564 is an abundant number, since it is smaller than the sum of its proper divisors (2369356164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421613564 is a wasteful number, since it uses less digits than its factorization.

1421613564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16923985 (or 16923983 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 1421613564 is about 37704.2910555284. The cubic root of 1421613564 is about 1124.4164384823.

It can be divided in two parts, 142 and 1613564, that added together give a triangular number (1613706 = T₁₇₉₆).

The spelling of 1421613564 in words is "one billion, four hundred twenty-one million, six hundred thirteen thousand, five hundred sixty-four".