1421164764 has 60 divisors (see below), whose sum is σ = 3734619504. Its totient is φ = 471246336.

The previous prime is 1421164757. The next prime is 1421164769. The reversal of 1421164764 is 4674611241.

It is a happy number.

1421164764 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 1 + 647 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421164769) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 51169 + ... + 73895.

Almost surely, 2^1421164764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421164764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867309752).

1421164764 is an abundant number, since it is smaller than the sum of its proper divisors (2313454740).

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

1421164764 is a wasteful number, since it uses less digits than its factorization.

1421164764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22936 (or 22925 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 1421164764 is about 37698.3390085027. The cubic root of 1421164764 is about 1124.2981008356.

The spelling of 1421164764 in words is "one billion, four hundred twenty-one million, one hundred sixty-four thousand, seven hundred sixty-four".