1961541077 has 8 divisors (see below), whose sum is σ = 1999326240. Its totient is φ = 1923784720.

The previous prime is 1961541067. The next prime is 1961541091. The reversal of 1961541077 is 7701451691.

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 1961541077 - 2⁴ = 1961541061 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 (1961541067) 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, 173174 + ... + 184152.

It is an arithmetic number, because the mean of its divisors is an integer number (249915780).

Almost surely, 2^1961541077 is an apocalyptic number.

It is an amenable number.

1961541077 is a deficient number, since it is larger than the sum of its proper divisors (37785163).

1961541077 is a wasteful number, since it uses less digits than its factorization.

1961541077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14403.

The product of its (nonzero) digits is 52920, while the sum is 41.

The square root of 1961541077 is about 44289.2885131383. The cubic root of 1961541077 is about 1251.7928570614.

The spelling of 1961541077 in words is "one billion, nine hundred sixty-one million, five hundred forty-one thousand, seventy-seven".