140477818 has 16 divisors (see below), whose sum is σ = 232204896. Its totient is φ = 63327600.

The previous prime is 140477759. The next prime is 140477819. The reversal of 140477818 is 818774041.

It is a super-2 number, since 2×140477818² = 39468034700082248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140477819) 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, 61708 + ... + 63943.

It is an arithmetic number, because the mean of its divisors is an integer number (14512806).

Almost surely, 2^140477818 is an apocalyptic number.

140477818 is a deficient number, since it is larger than the sum of its proper divisors (91727078).

140477818 is a wasteful number, since it uses less digits than its factorization.

140477818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125709.

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 140477818 is about 11852.3338629993. Note that the first 3 decimals coincide. The cubic root of 140477818 is about 519.8394696782.

The spelling of 140477818 in words is "one hundred forty million, four hundred seventy-seven thousand, eight hundred eighteen".