1949551061 has 8 divisors (see below), whose sum is σ = 1982971200. Its totient is φ = 1916367552.

The previous prime is 1949551057. The next prime is 1949551073. The reversal of 1949551061 is 1601559491.

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 1949551061 - 2² = 1949551057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949551091) 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 7 ways as a sum of consecutive naturals, for example, 42500 + ... + 75533.

It is an arithmetic number, because the mean of its divisors is an integer number (247871400).

Almost surely, 2^1949551061 is an apocalyptic number.

It is an amenable number.

1949551061 is a deficient number, since it is larger than the sum of its proper divisors (33420139).

1949551061 is a wasteful number, since it uses less digits than its factorization.

1949551061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118315.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 1949551061 is about 44153.7208058392. The cubic root of 1949551061 is about 1249.2370941545.

The spelling of 1949551061 in words is "one billion, nine hundred forty-nine million, five hundred fifty-one thousand, sixty-one".