1899226545 has 8 divisors (see below), whose sum is σ = 3038762496. Its totient is φ = 1012920816.

The previous prime is 1899226531. The next prime is 1899226577. The reversal of 1899226545 is 5456229981.

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

It is not a de Polignac number, because 1899226545 - 2⁶ = 1899226481 is a prime.

It is a super-2 number, since 2×1899226545² = 7214122938465274050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63307537 + ... + 63307566.

It is an arithmetic number, because the mean of its divisors is an integer number (379845312).

Almost surely, 2^1899226545 is an apocalyptic number.

1899226545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1899226545 is a deficient number, since it is larger than the sum of its proper divisors (1139535951).

1899226545 is a wasteful number, since it uses less digits than its factorization.

1899226545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126615111.

The product of its digits is 1555200, while the sum is 51.

The square root of 1899226545 is about 43580.1163949799. The cubic root of 1899226545 is about 1238.3942415167.

The spelling of 1899226545 in words is "one billion, eight hundred ninety-nine million, two hundred twenty-six thousand, five hundred forty-five".