1551226018234 has 4 divisors (see below), whose sum is σ = 2326839027354. Its totient is φ = 775613009116.

The previous prime is 1551226018207. The next prime is 1551226018289. The reversal of 1551226018234 is 4328106221551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1195119036225 + 356106982009 = 1093215^2 + 596747^2 .

It is a super-2 number, since 2×1551226018234² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387806504557 + ... + 387806504560.

Almost surely, 2^{1551226018234} is an apocalyptic number.

1551226018234 is a deficient number, since it is larger than the sum of its proper divisors (775613009120).

1551226018234 is an equidigital number, since it uses as much as digits as its factorization.

1551226018234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775613009119.

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

The spelling of 1551226018234 in words is "one trillion, five hundred fifty-one billion, two hundred twenty-six million, eighteen thousand, two hundred thirty-four".