1650610401 has 16 divisors (see below), whose sum is σ = 2413084608. Its totient is φ = 995288000.

The previous prime is 1650610399. The next prime is 1650610411. The reversal of 1650610401 is 1040160561.

It is a cyclic number.

It is not a de Polignac number, because 1650610401 - 2¹ = 1650610399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1650610411) 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, 120450 + ... + 133451.

It is an arithmetic number, because the mean of its divisors is an integer number (150817788).

Almost surely, 2^1650610401 is an apocalyptic number.

1650610401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1650610401 is a deficient number, since it is larger than the sum of its proper divisors (762474207).

1650610401 is a wasteful number, since it uses less digits than its factorization.

1650610401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254112.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1650610401 is about 40627.7048453392. The cubic root of 1650610401 is about 1181.8114476451.

Adding to 1650610401 its reverse (1040160561), we get a palindrome (2690770962).

The spelling of 1650610401 in words is "one billion, six hundred fifty million, six hundred ten thousand, four hundred one".