1229894554 has 8 divisors (see below), whose sum is σ = 2108390688. Its totient is φ = 527097660.

The previous prime is 1229894551. The next prime is 1229894629. The reversal of 1229894554 is 4554989221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1229894554² = 3025281227917717832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1229894498 and 1229894507.

It is not an unprimeable number, because it can be changed into a prime (1229894551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43924792 + ... + 43924819.

It is an arithmetic number, because the mean of its divisors is an integer number (263548836).

Almost surely, 2^1229894554 is an apocalyptic number.

1229894554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1229894554 is a deficient number, since it is larger than the sum of its proper divisors (878496134).

1229894554 is an equidigital number, since it uses as much as digits as its factorization.

1229894554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87849620.

The product of its digits is 1036800, while the sum is 49.

The square root of 1229894554 is about 35069.8524946998. The cubic root of 1229894554 is about 1071.4106511475.

The spelling of 1229894554 in words is "one billion, two hundred twenty-nine million, eight hundred ninety-four thousand, five hundred fifty-four".