1423155388 has 24 divisors (see below), whose sum is σ = 2510080272. Its totient is φ = 706003584.

The previous prime is 1423155361. The next prime is 1423155421. The reversal of 1423155388 is 8835513241.

It is a self number, because there is not a number n which added to its sum of digits gives 1423155388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593520 + ... + 595912.

It is an arithmetic number, because the mean of its divisors is an integer number (104586678).

Almost surely, 2^1423155388 is an apocalyptic number.

It is an amenable number.

1423155388 is a deficient number, since it is larger than the sum of its proper divisors (1086924884).

1423155388 is a wasteful number, since it uses less digits than its factorization.

1423155388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501 (or 3499 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 1423155388 is about 37724.7317816840. The cubic root of 1423155388 is about 1124.8227903261.

The spelling of 1423155388 in words is "one billion, four hundred twenty-three million, one hundred fifty-five thousand, three hundred eighty-eight".