1438949619 has 12 divisors (see below), whose sum is σ = 2078811592. Its totient is φ = 959148000.

The previous prime is 1438949609. The next prime is 1438949639. The reversal of 1438949619 is 9169498341.

It is a happy number.

1438949619 is a `hidden beast` number, since 14 + 3 + 8 + 9 + 4 + 9 + 619 = 666.

It is not a de Polignac number, because 1438949619 - 2⁵ = 1438949587 is a prime.

It is a super-2 number, since 2×1438949619² = 4141152012040490322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1438949609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105639 + ... + 118479.

Almost surely, 2^1438949619 is an apocalyptic number.

1438949619 is a deficient number, since it is larger than the sum of its proper divisors (639861973).

1438949619 is a wasteful number, since it uses less digits than its factorization.

1438949619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25298 (or 25295 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 1438949619 is about 37933.4894123913. The cubic root of 1438949619 is about 1128.9685994358.

The spelling of 1438949619 in words is "one billion, four hundred thirty-eight million, nine hundred forty-nine thousand, six hundred nineteen".