1680952251 has 16 divisors (see below), whose sum is σ = 2459162880. Its totient is φ = 1012866720.

The previous prime is 1680952243. The next prime is 1680952253. The reversal of 1680952251 is 1522590861.

1680952251 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1680952251 - 2³ = 1680952243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1680952253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141511 + ... + 152928.

It is an arithmetic number, because the mean of its divisors is an integer number (153697680).

Almost surely, 2^1680952251 is an apocalyptic number.

1680952251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1680952251 is a deficient number, since it is larger than the sum of its proper divisors (778210629).

1680952251 is a wasteful number, since it uses less digits than its factorization.

1680952251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294626.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 1680952251 is about 40999.4176909868. The cubic root of 1680952251 is about 1189.0089554950.

The spelling of 1680952251 in words is "one billion, six hundred eighty million, nine hundred fifty-two thousand, two hundred fifty-one".