1461745623 has 16 divisors (see below), whose sum is σ = 2133328736. Its totient is φ = 884787840.

The previous prime is 1461745603. The next prime is 1461745631. The reversal of 1461745623 is 3265471641.

It is a happy number.

It is not a de Polignac number, because 1461745623 - 2⁶ = 1461745559 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461745603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304840 + ... + 309597.

It is an arithmetic number, because the mean of its divisors is an integer number (133333046).

Almost surely, 2^1461745623 is an apocalyptic number.

1461745623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1461745623 is a deficient number, since it is larger than the sum of its proper divisors (671583113).

1461745623 is a wasteful number, since it uses less digits than its factorization.

1461745623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614514.

The product of its digits is 120960, while the sum is 39.

The square root of 1461745623 is about 38232.7820463016. The cubic root of 1461745623 is about 1134.8991411603.

The spelling of 1461745623 in words is "one billion, four hundred sixty-one million, seven hundred forty-five thousand, six hundred twenty-three".