1421146819 has 16 divisors (see below), whose sum is σ = 1514304000. Its totient is φ = 1329924960.

The previous prime is 1421146799. The next prime is 1421146843. The reversal of 1421146819 is 9186411241.

It is a cyclic number.

It is not a de Polignac number, because 1421146819 - 2²³ = 1412758211 is a prime.

It is a super-2 number, since 2×1421146819² = 4039316562307637522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1421146019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 593677 + ... + 596065.

It is an arithmetic number, because the mean of its divisors is an integer number (94644000).

Almost surely, 2^1421146819 is an apocalyptic number.

1421146819 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1421146819 is a deficient number, since it is larger than the sum of its proper divisors (93157181).

1421146819 is a wasteful number, since it uses less digits than its factorization.

1421146819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778.

The product of its digits is 13824, while the sum is 37.

The square root of 1421146819 is about 37698.1009999178. The cubic root of 1421146819 is about 1124.2933686575.

It can be divided in two parts, 1421 and 146819, that added together give a triangular number (148240 = T₅₄₄).

The spelling of 1421146819 in words is "one billion, four hundred twenty-one million, one hundred forty-six thousand, eight hundred nineteen".