1451420219 has 2 divisors, whose sum is σ = 1451420220. Its totient is φ = 1451420218.

The previous prime is 1451420209. The next prime is 1451420233. The reversal of 1451420219 is 9120241541.

It is a weak prime.

It is an emirp because it is prime and its reverse (9120241541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1451420219 is a prime.

It is a super-2 number, since 2×1451420219² = 4213241304244015922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1451420191 and 1451420200.

It is not a weakly prime, because it can be changed into another prime (1451420209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725710109 + 725710110.

It is an arithmetic number, because the mean of its divisors is an integer number (725710110).

Almost surely, 2^1451420219 is an apocalyptic number.

1451420219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451420219 is an equidigital number, since it uses as much as digits as its factorization.

1451420219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1451420219 is about 38097.5093542872. The cubic root of 1451420219 is about 1132.2206102247.

The spelling of 1451420219 in words is "one billion, four hundred fifty-one million, four hundred twenty thousand, two hundred nineteen".