1229378054 has 4 divisors (see below), whose sum is σ = 1844067084. Its totient is φ = 614689026.

The previous prime is 1229378047. The next prime is 1229378057. The reversal of 1229378054 is 4508739221.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1229378054² = 3022740799313653832, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229378057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307344512 + ... + 307344515.

It is an arithmetic number, because the mean of its divisors is an integer number (461016771).

Almost surely, 2^1229378054 is an apocalyptic number.

1229378054 is a deficient number, since it is larger than the sum of its proper divisors (614689030).

1229378054 is an equidigital number, since it uses as much as digits as its factorization.

1229378054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614689029.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1229378054 is about 35062.4878467002. The cubic root of 1229378054 is about 1071.2606488341.

The spelling of 1229378054 in words is "one billion, two hundred twenty-nine million, three hundred seventy-eight thousand, fifty-four".