1520221414 has 4 divisors (see below), whose sum is σ = 2280332124. Its totient is φ = 760110706.

The previous prime is 1520221349. The next prime is 1520221433. The reversal of 1520221414 is 4141220251.

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

It is a super-2 number, since 2×1520221414² = 4622146295168318792, which contains 22 as substring.

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, 380055352 + ... + 380055355.

It is an arithmetic number, because the mean of its divisors is an integer number (570083031).

Almost surely, 2^1520221414 is an apocalyptic number.

1520221414 is a deficient number, since it is larger than the sum of its proper divisors (760110710).

1520221414 is an equidigital number, since it uses as much as digits as its factorization.

1520221414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760110709.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1520221414 is about 38990.0168504708. The cubic root of 1520221414 is about 1149.8352414248.

Adding to 1520221414 its reverse (4141220251), we get a palindrome (5661441665).

The spelling of 1520221414 in words is "one billion, five hundred twenty million, two hundred twenty-one thousand, four hundred fourteen".