1788951616 has 63 divisors (see below), whose sum is σ = 3783219637. Its totient is φ = 839152640.

The previous prime is 1788951613. The next prime is 1788951629. The reversal of 1788951616 is 6161598871.

The square root of 1788951616 is 42296.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1392782400 + 396169216 = 37320^2 + 19904^2 .

It is a super-2 number, since 2×1788951616² = 6400695768778022912, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1788951613) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5752101 + ... + 5752411.

Almost surely, 2^1788951616 is an apocalyptic number.

1788951616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1788951616 is the 42296-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1788951616

1788951616 is an abundant number, since it is smaller than the sum of its proper divisors (1994268021).

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

1788951616 is an frugal number, since it uses more digits than its factorization.

1788951616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 330 counting only the distinct ones).

The product of its digits is 725760, while the sum is 52.

The cubic root of 1788951616 is about 1213.9464560809.

The spelling of 1788951616 in words is "one billion, seven hundred eighty-eight million, nine hundred fifty-one thousand, six hundred sixteen".