1423945155 has 16 divisors (see below), whose sum is σ = 2278886400. Its totient is φ = 759246048.

The previous prime is 1423945121. The next prime is 1423945163. The reversal of 1423945155 is 5515493241.

It is a happy number.

It is not a de Polignac number, because 1423945155 - 2⁶ = 1423945091 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65896 + ... + 84794.

It is an arithmetic number, because the mean of its divisors is an integer number (142430400).

Almost surely, 2^1423945155 is an apocalyptic number.

1423945155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1423945155 is a deficient number, since it is larger than the sum of its proper divisors (854941245).

1423945155 is a wasteful number, since it uses less digits than its factorization.

1423945155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23930.

The product of its digits is 108000, while the sum is 39.

The square root of 1423945155 is about 37735.1978264326. The cubic root of 1423945155 is about 1125.0308218716.

The spelling of 1423945155 in words is "one billion, four hundred twenty-three million, nine hundred forty-five thousand, one hundred fifty-five".