1974728111 has 8 divisors (see below), whose sum is σ = 1986052464. Its totient is φ = 1963422720.

The previous prime is 1974728101. The next prime is 1974728137. The reversal of 1974728111 is 1118274791.

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

It is a cyclic number.

It is not a de Polignac number, because 1974728111 - 2⁶ = 1974728047 is a prime.

It is a super-2 number, since 2×1974728111² = 7799102224747256642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974728101) 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, 239225 + ... + 247341.

It is an arithmetic number, because the mean of its divisors is an integer number (248256558).

Almost surely, 2^1974728111 is an apocalyptic number.

1974728111 is a deficient number, since it is larger than the sum of its proper divisors (11324353).

1974728111 is a wasteful number, since it uses less digits than its factorization.

1974728111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9481.

The product of its digits is 28224, while the sum is 41.

The square root of 1974728111 is about 44437.9129910485. The cubic root of 1974728111 is about 1254.5917755043.

The spelling of 1974728111 in words is "one billion, nine hundred seventy-four million, seven hundred twenty-eight thousand, one hundred eleven".