1678157034 has 16 divisors (see below), whose sum is σ = 3356743680. Its totient is φ = 559314080.

The previous prime is 1678157021. The next prime is 1678157053. The reversal of 1678157034 is 4307518761.

It is a super-2 number, since 2×1678157034² = 5632422061527354312, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56974 + ... + 81254.

It is an arithmetic number, because the mean of its divisors is an integer number (209796480).

Almost surely, 2^1678157034 is an apocalyptic number.

1678157034 is an abundant number, since it is smaller than the sum of its proper divisors (1678586646).

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

1678157034 is a wasteful number, since it uses less digits than its factorization.

1678157034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35805.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 1678157034 is about 40965.3150116046. The cubic root of 1678157034 is about 1188.3495312591.

The spelling of 1678157034 in words is "one billion, six hundred seventy-eight million, one hundred fifty-seven thousand, thirty-four".