1679747772 has 48 divisors (see below), whose sum is σ = 4054400000. Its totient is φ = 540708480.

The previous prime is 1679747767. The next prime is 1679747777. The reversal of 1679747772 is 2777479761.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1679747767) and next prime (1679747777).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679747777) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 181104 + ... + 190152.

Almost surely, 2^1679747772 is an apocalyptic number.

1679747772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1679747772 is an abundant number, since it is smaller than the sum of its proper divisors (2374652228).

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

1679747772 is a wasteful number, since it uses less digits than its factorization.

1679747772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9586 (or 9584 counting only the distinct ones).

The product of its digits is 7260624, while the sum is 57.

The square root of 1679747772 is about 40984.7260817978. The cubic root of 1679747772 is about 1188.7248945772.

The spelling of 1679747772 in words is "one billion, six hundred seventy-nine million, seven hundred forty-seven thousand, seven hundred seventy-two".