1949423623 has 8 divisors (see below), whose sum is σ = 2299781120. Its totient is φ = 1617033240.

The previous prime is 1949423621. The next prime is 1949423669. The reversal of 1949423623 is 3263249491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1949423623 - 2¹ = 1949423621 is a prime.

It is a super-2 number, since 2×1949423623² = 7600504923820892258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1949423623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949423621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4491543 + ... + 4491976.

It is an arithmetic number, because the mean of its divisors is an integer number (287472640).

Almost surely, 2^1949423623 is an apocalyptic number.

1949423623 is a deficient number, since it is larger than the sum of its proper divisors (350357497).

1949423623 is an equidigital number, since it uses as much as digits as its factorization.

1949423623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8983557.

The product of its digits is 279936, while the sum is 43.

The square root of 1949423623 is about 44152.2776649178. The cubic root of 1949423623 is about 1249.2098735721.

The spelling of 1949423623 in words is "one billion, nine hundred forty-nine million, four hundred twenty-three thousand, six hundred twenty-three".