1002155419 has 2 divisors, whose sum is σ = 1002155420. Its totient is φ = 1002155418.

The previous prime is 1002155359. The next prime is 1002155447. The reversal of 1002155419 is 9145512001.

It is an a-pointer prime, because the next prime (1002155447) can be obtained adding 1002155419 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1002155419 - 2²³ = 993766811 is a prime.

It is a super-2 number, since 2×1002155419² = 2008630967662131122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1002155449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501077709 + 501077710.

It is an arithmetic number, because the mean of its divisors is an integer number (501077710).

Almost surely, 2^1002155419 is an apocalyptic number.

1002155419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002155419 is an equidigital number, since it uses as much as digits as its factorization.

1002155419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 1002155419 is about 31656.8384239488. The cubic root of 1002155419 is about 1000.7179574138.

The spelling of 1002155419 in words is "one billion, two million, one hundred fifty-five thousand, four hundred nineteen".