1801226145 has 16 divisors (see below), whose sum is σ = 2952254592. Its totient is φ = 937223040.

The previous prime is 1801226113. The next prime is 1801226153. The reversal of 1801226145 is 5416221081.

It is not a de Polignac number, because 1801226145 - 2⁵ = 1801226113 is a prime.

It is a super-2 number, since 2×1801226145² = 6488831250863122050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1463797 + ... + 1465026.

It is an arithmetic number, because the mean of its divisors is an integer number (184515912).

Almost surely, 2^1801226145 is an apocalyptic number.

1801226145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1801226145 is a deficient number, since it is larger than the sum of its proper divisors (1151028447).

1801226145 is a wasteful number, since it uses less digits than its factorization.

1801226145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928872.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1801226145 is about 42440.8546685856. The cubic root of 1801226145 is about 1216.7165461088.

The spelling of 1801226145 in words is "one billion, eight hundred one million, two hundred twenty-six thousand, one hundred forty-five".