1258228923 has 16 divisors (see below), whose sum is σ = 1924133376. Its totient is φ = 716425920.

The previous prime is 1258228901. The next prime is 1258228969. The reversal of 1258228923 is 3298228521.

It is not a de Polignac number, because 1258228923 - 2¹⁷ = 1258097851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1258228523) by changing a digit.

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, 100711 + ... + 112512.

It is an arithmetic number, because the mean of its divisors is an integer number (120258336).

Almost surely, 2^1258228923 is an apocalyptic number.

1258228923 is a deficient number, since it is larger than the sum of its proper divisors (665904453).

1258228923 is a wasteful number, since it uses less digits than its factorization.

1258228923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213514.

The product of its digits is 138240, while the sum is 42.

The square root of 1258228923 is about 35471.5227048403. The cubic root of 1258228923 is about 1079.5760004010.

It can be divided in two parts, 1258 and 228923, that added together give a triangular number (230181 = T₆₇₈).

The spelling of 1258228923 in words is "one billion, two hundred fifty-eight million, two hundred twenty-eight thousand, nine hundred twenty-three".