1961498741 has 2 divisors, whose sum is σ = 1961498742. Its totient is φ = 1961498740.

The previous prime is 1961498713. The next prime is 1961498761. The reversal of 1961498741 is 1478941691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1753850641 + 207648100 = 41879^2 + 14410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1961498741 - 2¹⁴ = 1961482357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1961498741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1961498711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980749370 + 980749371.

It is an arithmetic number, because the mean of its divisors is an integer number (980749371).

Almost surely, 2^1961498741 is an apocalyptic number.

It is an amenable number.

1961498741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961498741 is an equidigital number, since it uses as much as digits as its factorization.

1961498741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 50.

The square root of 1961498741 is about 44288.8105620370. The cubic root of 1961498741 is about 1251.7838511690.

The spelling of 1961498741 in words is "one billion, nine hundred sixty-one million, four hundred ninety-eight thousand, seven hundred forty-one".