1554045642 has 16 divisors (see below), whose sum is σ = 3453434880. Its totient is φ = 518015196.

The previous prime is 1554045641. The next prime is 1554045653. The reversal of 1554045642 is 2465404551.

1554045642 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 0 + 4 + 5 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1554045597 and 1554045606.

It is not an unprimeable number, because it can be changed into a prime (1554045641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14389258 + ... + 14389365.

It is an arithmetic number, because the mean of its divisors is an integer number (215839680).

Almost surely, 2^1554045642 is an apocalyptic number.

1554045642 is an abundant number, since it is smaller than the sum of its proper divisors (1899389238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1554045642 is a wasteful number, since it uses less digits than its factorization.

1554045642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28778634 (or 28778628 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The square root of 1554045642 is about 39421.3855920869. The cubic root of 1554045642 is about 1158.3005340930.

The spelling of 1554045642 in words is "one billion, five hundred fifty-four million, forty-five thousand, six hundred forty-two".