1557374854 has 8 divisors (see below), whose sum is σ = 2669785488. Its totient is φ = 667446360.

The previous prime is 1557374837. The next prime is 1557374857. The reversal of 1557374854 is 4584737551.

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

It is a junction number, because it is equal to n+sod(n) for n = 1557374798 and 1557374807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557374857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55620517 + ... + 55620544.

It is an arithmetic number, because the mean of its divisors is an integer number (333723186).

Almost surely, 2^1557374854 is an apocalyptic number.

1557374854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1557374854 is a deficient number, since it is larger than the sum of its proper divisors (1112410634).

1557374854 is a wasteful number, since it uses less digits than its factorization.

1557374854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111241070.

The product of its digits is 2352000, while the sum is 49.

The square root of 1557374854 is about 39463.5889650194. The cubic root of 1557374854 is about 1159.1270815874.

The spelling of 1557374854 in words is "one billion, five hundred fifty-seven million, three hundred seventy-four thousand, eight hundred fifty-four".