1451977216 has 40 divisors (see below), whose sum is σ = 2968631424. Its totient is φ = 709094400.

The previous prime is 1451977213. The next prime is 1451977223. The reversal of 1451977216 is 6127791541.

It is a happy number.

It is a super-3 number, since 3×1451977216³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (1451977213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10960 + ... + 54991.

Almost surely, 2^1451977216 is an apocalyptic number.

1451977216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1451977216 is an abundant number, since it is smaller than the sum of its proper divisors (1516654208).

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

1451977216 is an frugal number, since it uses more digits than its factorization.

1451977216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66012 (or 65996 counting only the distinct ones).

The product of its digits is 105840, while the sum is 43.

The square root of 1451977216 is about 38104.8188028758. The cubic root of 1451977216 is about 1132.3654253560.

The spelling of 1451977216 in words is "one billion, four hundred fifty-one million, nine hundred seventy-seven thousand, two hundred sixteen".