478971619 has 12 divisors (see below), whose sum is σ = 581397264. Its totient is φ = 392696304.

The previous prime is 478971611. The next prime is 478971629. The reversal of 478971619 is 916179874.

478971619 = T₄₃₉₇ + T₄₃₉₈ + ... + T₄₄₄₅.

It is not a de Polignac number, because 478971619 - 2³ = 478971611 is a prime.

It is a super-2 number, since 2×478971619² = 458827623614962322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478971611) 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, 211372 + ... + 213625.

It is an arithmetic number, because the mean of its divisors is an integer number (48449772).

Almost surely, 2^478971619 is an apocalyptic number.

478971619 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

478971619 is a deficient number, since it is larger than the sum of its proper divisors (102425645).

478971619 is a wasteful number, since it uses less digits than its factorization.

478971619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425034 (or 425027 counting only the distinct ones).

The product of its digits is 762048, while the sum is 52.

The square root of 478971619 is about 21885.4202381403. The cubic root of 478971619 is about 782.4139651656.

The spelling of 478971619 in words is "four hundred seventy-eight million, nine hundred seventy-one thousand, six hundred nineteen".