2101657154 has 8 divisors (see below), whose sum is σ = 3289550400. Its totient is φ = 1005140356.

The previous prime is 2101657153. The next prime is 2101657163. The reversal of 2101657154 is 4517561012.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101657154.

It is not an unprimeable number, because it can be changed into a prime (2101657153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22844054 + ... + 22844145.

It is an arithmetic number, because the mean of its divisors is an integer number (411193800).

Almost surely, 2^2101657154 is an apocalyptic number.

2101657154 is a deficient number, since it is larger than the sum of its proper divisors (1187893246).

2101657154 is a wasteful number, since it uses less digits than its factorization.

2101657154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45688224.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 2101657154 is about 45843.8344164185. The cubic root of 2101657154 is about 1280.9159203729.

The spelling of 2101657154 in words is "two billion, one hundred one million, six hundred fifty-seven thousand, one hundred fifty-four".