1540100222 has 4 divisors (see below), whose sum is σ = 2310150336. Its totient is φ = 770050110.

The previous prime is 1540100213. The next prime is 1540100269. The reversal of 1540100222 is 2220010451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2220010451 = 149 ⋅14899399.

It is a self number, because there is not a number n which added to its sum of digits gives 1540100222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385025054 + ... + 385025057.

It is an arithmetic number, because the mean of its divisors is an integer number (577537584).

Almost surely, 2^1540100222 is an apocalyptic number.

1540100222 is a deficient number, since it is larger than the sum of its proper divisors (770050114).

1540100222 is an equidigital number, since it uses as much as digits as its factorization.

1540100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770050113.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1540100222 is about 39244.1106664427. The cubic root of 1540100222 is about 1154.8254009171.

Adding to 1540100222 its reverse (2220010451), we get a palindrome (3760110673).

The spelling of 1540100222 in words is "one billion, five hundred forty million, one hundred thousand, two hundred twenty-two".