1423616564 has 6 divisors (see below), whose sum is σ = 2491328994. Its totient is φ = 711808280.

The previous prime is 1423616563. The next prime is 1423616569. The reversal of 1423616564 is 4656163241.

It can be written as a sum of positive squares in only one way, i.e., 1270352164 + 153264400 = 35642^2 + 12380^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423616563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177952067 + ... + 177952074.

It is an arithmetic number, because the mean of its divisors is an integer number (415221499).

Almost surely, 2^1423616564 is an apocalyptic number.

It is an amenable number.

1423616564 is a deficient number, since it is larger than the sum of its proper divisors (1067712430).

1423616564 is a wasteful number, since it uses less digits than its factorization.

1423616564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355904145 (or 355904143 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 1423616564 is about 37730.8436693377. The cubic root of 1423616564 is about 1124.9442774705.

The spelling of 1423616564 in words is "one billion, four hundred twenty-three million, six hundred sixteen thousand, five hundred sixty-four".